639976400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:230

約数の個数: 240

約数和(自身を含む): 1856928768

約数和(自身を除く): 1216952368

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 31, 35, 40, 50, 56, 62, 70, 73, 80, 100, 101, 112, 124, 140, 146, 155, 175, 200, 202, 217, 248, 280, 292, 310, 350, 365, 400, 404, 434, 496, 505, 511, 560, 584, 620, 700, 707, 730, 775, 808, 868, 1010, 1022, 1085, 1168, 1240, 1400, 1414, 1460, 1550, 1616, 1736, 1825, 2020, 2044, 2170, 2263, 2480, 2525, 2555, 2800, 2828, 2920, 3100, 3131, 3472, 3535, 3650, 4040, 4088, 4340, 4526, 5050, 5110, 5425, 5656, 5840, 6200, 6262, 7070, 7300, 7373, 8080, 8176, 8680, 9052, 10100, 10220, 10850, 11312, 11315, 12400, 12524, 12775, 14140, 14600, 14746, 15655, 15841, 17360, 17675, 18104, 20200, 20440, 21700, 21917, 22630, 25048, 25550, 28280, 29200, 29492, 31310, 31682, 35350, 36208, 36865, 40400, 40880, 43400, 43834, 45260, 50096, 51100, 51611, 56560, 56575, 58984, 62620, 63364, 70700, 73730, 78275, 79205, 86800, 87668, 90520, 102200, 103222, 109585, 113150, 117968, 125240, 126728, 141400, 147460, 156550, 158410, 175336, 181040, 184325, 204400, 206444, 219170, 226300, 228563, 250480, 253456, 258055, 282800, 294920, 313100, 316820, 350672, 368650, 396025, 412888, 438340, 452600, 457126, 516110, 547925, 589840, 626200, 633640, 737300, 792050, 825776, 876680, 905200, 914252, 1032220, 1095850, 1142815, 1252400, 1267280, 1290275, 1474600, 1584100, 1599941, 1753360, 1828504, 2064440, 2191700, 2285630, 2580550, 2949200, 3168200, 3199882, 3657008, 4128880, 4383400, 4571260, 5161100, 5714075, 6336400, 6399764, 7999705, 8766800, 9142520, 10322200, 11428150, 12799528, 15999410, 18285040, 20644400, 22856300, 25599056, 31998820, 39998525, 45712600, 63997640, 79997050, 91425200, 127995280, 159994100, 319988200, 639976400]

約数ペア:

[(1, 639976400), (2, 319988200), (4, 159994100), (5, 127995280), (7, 91425200), (8, 79997050), (10, 63997640), (14, 45712600), (16, 39998525), (20, 31998820), (25, 25599056), (28, 22856300), (31, 20644400), (35, 18285040), (40, 15999410), (50, 12799528), (56, 11428150), (62, 10322200), (70, 9142520), (73, 8766800), (80, 7999705), (100, 6399764), (101, 6336400), (112, 5714075), (124, 5161100), (140, 4571260), (146, 4383400), (155, 4128880), (175, 3657008), (200, 3199882), (202, 3168200), (217, 2949200), (248, 2580550), (280, 2285630), (292, 2191700), (310, 2064440), (350, 1828504), (365, 1753360), (400, 1599941), (404, 1584100), (434, 1474600), (496, 1290275), (505, 1267280), (511, 1252400), (560, 1142815), (584, 1095850), (620, 1032220), (700, 914252), (707, 905200), (730, 876680), (775, 825776), (808, 792050), (868, 737300), (1010, 633640), (1022, 626200), (1085, 589840), (1168, 547925), (1240, 516110), (1400, 457126), (1414, 452600), (1460, 438340), (1550, 412888), (1616, 396025), (1736, 368650), (1825, 350672), (2020, 316820), (2044, 313100), (2170, 294920), (2263, 282800), (2480, 258055), (2525, 253456), (2555, 250480), (2800, 228563), (2828, 226300), (2920, 219170), (3100, 206444), (3131, 204400), (3472, 184325), (3535, 181040), (3650, 175336), (4040, 158410), (4088, 156550), (4340, 147460), (4526, 141400), (5050, 126728), (5110, 125240), (5425, 117968), (5656, 113150), (5840, 109585), (6200, 103222), (6262, 102200), (7070, 90520), (7300, 87668), (7373, 86800), (8080, 79205), (8176, 78275), (8680, 73730), (9052, 70700), (10100, 63364), (10220, 62620), (10850, 58984), (11312, 56575), (11315, 56560), (12400, 51611), (12524, 51100), (12775, 50096), (14140, 45260), (14600, 43834), (14746, 43400), (15655, 40880), (15841, 40400), (17360, 36865), (17675, 36208), (18104, 35350), (20200, 31682), (20440, 31310), (21700, 29492), (21917, 29200), (22630, 28280), (25048, 25550)]