128401380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{23011}}^1$

素因数の和:23057

約数の個数: 72

約数和(自身を含む): 402065664

約数和(自身を除く): 273664284

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 5580, 23011, 46022, 69033, 92044, 115055, 138066, 207099, 230110, 276132, 345165, 414198, 460220, 690330, 713341, 828396, 1035495, 1380660, 1426682, 2070990, 2140023, 2853364, 3566705, 4141980, 4280046, 6420069, 7133410, 8560092, 10700115, 12840138, 14266820, 21400230, 25680276, 32100345, 42800460, 64200690, 128401380]

約数ペア:

[(1, 128401380), (2, 64200690), (3, 42800460), (4, 32100345), (5, 25680276), (6, 21400230), (9, 14266820), (10, 12840138), (12, 10700115), (15, 8560092), (18, 7133410), (20, 6420069), (30, 4280046), (31, 4141980), (36, 3566705), (45, 2853364), (60, 2140023), (62, 2070990), (90, 1426682), (93, 1380660), (124, 1035495), (155, 828396), (180, 713341), (186, 690330), (279, 460220), (310, 414198), (372, 345165), (465, 276132), (558, 230110), (620, 207099), (930, 138066), (1116, 115055), (1395, 92044), (1860, 69033), (2790, 46022), (5580, 23011)]