204578960

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{487}}^1$

素因数の和:648

約数の個数: 80

約数和(自身を含む): 490147200

約数和(自身を除く): 285568240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 89, 118, 178, 236, 295, 356, 445, 472, 487, 590, 712, 890, 944, 974, 1180, 1424, 1780, 1948, 2360, 2435, 3560, 3896, 4720, 4870, 5251, 7120, 7792, 9740, 10502, 19480, 21004, 26255, 28733, 38960, 42008, 43343, 52510, 57466, 84016, 86686, 105020, 114932, 143665, 173372, 210040, 216715, 229864, 287330, 346744, 420080, 433430, 459728, 574660, 693488, 866860, 1149320, 1733720, 2298640, 2557237, 3467440, 5114474, 10228948, 12786185, 20457896, 25572370, 40915792, 51144740, 102289480, 204578960]

約数ペア:

[(1, 204578960), (2, 102289480), (4, 51144740), (5, 40915792), (8, 25572370), (10, 20457896), (16, 12786185), (20, 10228948), (40, 5114474), (59, 3467440), (80, 2557237), (89, 2298640), (118, 1733720), (178, 1149320), (236, 866860), (295, 693488), (356, 574660), (445, 459728), (472, 433430), (487, 420080), (590, 346744), (712, 287330), (890, 229864), (944, 216715), (974, 210040), (1180, 173372), (1424, 143665), (1780, 114932), (1948, 105020), (2360, 86686), (2435, 84016), (3560, 57466), (3896, 52510), (4720, 43343), (4870, 42008), (5251, 38960), (7120, 28733), (7792, 26255), (9740, 21004), (10502, 19480)]