21000929440

素因数分解:

$2^5\times 5^1\times {\mathrm{2971}}^1\times {\mathrm{44179}}^1$

素因数の和:47165

約数の個数: 48

約数和(自身を含む): 49632518880

約数和(自身を除く): 28631589440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 2971, 5942, 11884, 14855, 23768, 29710, 44179, 47536, 59420, 88358, 95072, 118840, 176716, 220895, 237680, 353432, 441790, 475360, 706864, 883580, 1413728, 1767160, 3534320, 7068640, 131255809, 262511618, 525023236, 656279045, 1050046472, 1312558090, 2100092944, 2625116180, 4200185888, 5250232360, 10500464720, 21000929440]

約数ペア:

[(1, 21000929440), (2, 10500464720), (4, 5250232360), (5, 4200185888), (8, 2625116180), (10, 2100092944), (16, 1312558090), (20, 1050046472), (32, 656279045), (40, 525023236), (80, 262511618), (160, 131255809), (2971, 7068640), (5942, 3534320), (11884, 1767160), (14855, 1413728), (23768, 883580), (29710, 706864), (44179, 475360), (47536, 441790), (59420, 353432), (88358, 237680), (95072, 220895), (118840, 176716)]