20077380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1571}}^1$

素因数の和:1657

約数の個数: 72

約数和(自身を含む): 61798464

約数和(自身を除く): 41721084

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 1571, 2130, 2556, 3142, 3195, 4260, 4713, 6284, 6390, 7855, 9426, 12780, 14139, 15710, 18852, 23565, 28278, 31420, 47130, 56556, 70695, 94260, 111541, 141390, 223082, 282780, 334623, 446164, 557705, 669246, 1003869, 1115410, 1338492, 1673115, 2007738, 2230820, 3346230, 4015476, 5019345, 6692460, 10038690, 20077380]

約数ペア:

[(1, 20077380), (2, 10038690), (3, 6692460), (4, 5019345), (5, 4015476), (6, 3346230), (9, 2230820), (10, 2007738), (12, 1673115), (15, 1338492), (18, 1115410), (20, 1003869), (30, 669246), (36, 557705), (45, 446164), (60, 334623), (71, 282780), (90, 223082), (142, 141390), (180, 111541), (213, 94260), (284, 70695), (355, 56556), (426, 47130), (639, 31420), (710, 28278), (852, 23565), (1065, 18852), (1278, 15710), (1420, 14139), (1571, 12780), (2130, 9426), (2556, 7855), (3142, 6390), (3195, 6284), (4260, 4713)]