1990547200

素因数分解:

$2^8\times 5^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:263

約数の個数: 216

約数和(自身を含む): 5190778880

約数和(自身を除く): 3200231680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 64, 79, 80, 100, 124, 127, 128, 155, 158, 160, 200, 248, 254, 256, 310, 316, 320, 395, 400, 496, 508, 620, 632, 635, 640, 775, 790, 800, 992, 1016, 1240, 1264, 1270, 1280, 1550, 1580, 1600, 1975, 1984, 2032, 2449, 2480, 2528, 2540, 3100, 3160, 3175, 3200, 3937, 3950, 3968, 4064, 4898, 4960, 5056, 5080, 6200, 6320, 6350, 6400, 7874, 7900, 7936, 8128, 9796, 9920, 10033, 10112, 10160, 12245, 12400, 12640, 12700, 15748, 15800, 16256, 19592, 19685, 19840, 20066, 20224, 20320, 24490, 24800, 25280, 25400, 31496, 31600, 32512, 39184, 39370, 39680, 40132, 40640, 48980, 49600, 50165, 50560, 50800, 61225, 62992, 63200, 78368, 78740, 80264, 81280, 97960, 98425, 99200, 100330, 101120, 101600, 122450, 125984, 126400, 156736, 157480, 160528, 162560, 195920, 196850, 198400, 200660, 203200, 244900, 250825, 251968, 252800, 311023, 313472, 314960, 321056, 391840, 393700, 401320, 406400, 489800, 501650, 503936, 505600, 622046, 626944, 629920, 642112, 783680, 787400, 802640, 812800, 979600, 1003300, 1007872, 1244092, 1259840, 1284224, 1555115, 1567360, 1574800, 1605280, 1959200, 2006600, 2488184, 2519680, 2568448, 3110230, 3134720, 3149600, 3210560, 3918400, 4013200, 4976368, 5039360, 6220460, 6299200, 6421120, 7775575, 7836800, 8026400, 9952736, 12440920, 12598400, 12842240, 15551150, 15673600, 16052800, 19905472, 24881840, 25196800, 31102300, 32105600, 39810944, 49763680, 62204600, 64211200, 79621888, 99527360, 124409200, 199054720, 248818400, 398109440, 497636800, 995273600, 1990547200]

約数ペア:

[(1, 1990547200), (2, 995273600), (4, 497636800), (5, 398109440), (8, 248818400), (10, 199054720), (16, 124409200), (20, 99527360), (25, 79621888), (31, 64211200), (32, 62204600), (40, 49763680), (50, 39810944), (62, 32105600), (64, 31102300), (79, 25196800), (80, 24881840), (100, 19905472), (124, 16052800), (127, 15673600), (128, 15551150), (155, 12842240), (158, 12598400), (160, 12440920), (200, 9952736), (248, 8026400), (254, 7836800), (256, 7775575), (310, 6421120), (316, 6299200), (320, 6220460), (395, 5039360), (400, 4976368), (496, 4013200), (508, 3918400), (620, 3210560), (632, 3149600), (635, 3134720), (640, 3110230), (775, 2568448), (790, 2519680), (800, 2488184), (992, 2006600), (1016, 1959200), (1240, 1605280), (1264, 1574800), (1270, 1567360), (1280, 1555115), (1550, 1284224), (1580, 1259840), (1600, 1244092), (1975, 1007872), (1984, 1003300), (2032, 979600), (2449, 812800), (2480, 802640), (2528, 787400), (2540, 783680), (3100, 642112), (3160, 629920), (3175, 626944), (3200, 622046), (3937, 505600), (3950, 503936), (3968, 501650), (4064, 489800), (4898, 406400), (4960, 401320), (5056, 393700), (5080, 391840), (6200, 321056), (6320, 314960), (6350, 313472), (6400, 311023), (7874, 252800), (7900, 251968), (7936, 250825), (8128, 244900), (9796, 203200), (9920, 200660), (10033, 198400), (10112, 196850), (10160, 195920), (12245, 162560), (12400, 160528), (12640, 157480), (12700, 156736), (15748, 126400), (15800, 125984), (16256, 122450), (19592, 101600), (19685, 101120), (19840, 100330), (20066, 99200), (20224, 98425), (20320, 97960), (24490, 81280), (24800, 80264), (25280, 78740), (25400, 78368), (31496, 63200), (31600, 62992), (32512, 61225), (39184, 50800), (39370, 50560), (39680, 50165), (40132, 49600), (40640, 48980)]