20511400

素因数分解:

$2^3\times 5^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1$

素因数の和:73

約数の個数: 192

約数和(自身を含む): 62496000

約数和(自身を除く): 41984600

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 23, 25, 26, 28, 35, 40, 46, 49, 50, 52, 56, 65, 70, 91, 92, 98, 100, 104, 115, 130, 140, 161, 175, 182, 184, 196, 200, 230, 245, 260, 280, 299, 322, 325, 343, 350, 364, 392, 455, 460, 490, 520, 575, 598, 637, 644, 650, 686, 700, 728, 805, 910, 920, 980, 1127, 1150, 1196, 1225, 1274, 1288, 1300, 1372, 1400, 1495, 1610, 1715, 1820, 1960, 2093, 2254, 2275, 2300, 2392, 2450, 2548, 2600, 2744, 2990, 3185, 3220, 3430, 3640, 4025, 4186, 4459, 4508, 4550, 4600, 4900, 5096, 5635, 5980, 6370, 6440, 6860, 7475, 7889, 8050, 8372, 8575, 8918, 9016, 9100, 9800, 10465, 11270, 11960, 12740, 13720, 14651, 14950, 15778, 15925, 16100, 16744, 17150, 17836, 18200, 20930, 22295, 22540, 25480, 28175, 29302, 29900, 31556, 31850, 32200, 34300, 35672, 39445, 41860, 44590, 45080, 52325, 56350, 58604, 59800, 63112, 63700, 68600, 73255, 78890, 83720, 89180, 102557, 104650, 111475, 112700, 117208, 127400, 146510, 157780, 178360, 197225, 205114, 209300, 222950, 225400, 293020, 315560, 366275, 394450, 410228, 418600, 445900, 512785, 586040, 732550, 788900, 820456, 891800, 1025570, 1465100, 1577800, 2051140, 2563925, 2930200, 4102280, 5127850, 10255700, 20511400]

約数ペア:

[(1, 20511400), (2, 10255700), (4, 5127850), (5, 4102280), (7, 2930200), (8, 2563925), (10, 2051140), (13, 1577800), (14, 1465100), (20, 1025570), (23, 891800), (25, 820456), (26, 788900), (28, 732550), (35, 586040), (40, 512785), (46, 445900), (49, 418600), (50, 410228), (52, 394450), (56, 366275), (65, 315560), (70, 293020), (91, 225400), (92, 222950), (98, 209300), (100, 205114), (104, 197225), (115, 178360), (130, 157780), (140, 146510), (161, 127400), (175, 117208), (182, 112700), (184, 111475), (196, 104650), (200, 102557), (230, 89180), (245, 83720), (260, 78890), (280, 73255), (299, 68600), (322, 63700), (325, 63112), (343, 59800), (350, 58604), (364, 56350), (392, 52325), (455, 45080), (460, 44590), (490, 41860), (520, 39445), (575, 35672), (598, 34300), (637, 32200), (644, 31850), (650, 31556), (686, 29900), (700, 29302), (728, 28175), (805, 25480), (910, 22540), (920, 22295), (980, 20930), (1127, 18200), (1150, 17836), (1196, 17150), (1225, 16744), (1274, 16100), (1288, 15925), (1300, 15778), (1372, 14950), (1400, 14651), (1495, 13720), (1610, 12740), (1715, 11960), (1820, 11270), (1960, 10465), (2093, 9800), (2254, 9100), (2275, 9016), (2300, 8918), (2392, 8575), (2450, 8372), (2548, 8050), (2600, 7889), (2744, 7475), (2990, 6860), (3185, 6440), (3220, 6370), (3430, 5980), (3640, 5635), (4025, 5096), (4186, 4900), (4459, 4600), (4508, 4550)]