21000331760

素因数分解:

$2^4\times 5^1\times {\mathrm{2287}}^1\times {\mathrm{114781}}^1$

素因数の和:117081

約数の個数: 40

約数和(自身を含む): 48847546176

約数和(自身を除く): 27847214416

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2287, 4574, 9148, 11435, 18296, 22870, 36592, 45740, 91480, 114781, 182960, 229562, 459124, 573905, 918248, 1147810, 1836496, 2295620, 4591240, 9182480, 262504147, 525008294, 1050016588, 1312520735, 2100033176, 2625041470, 4200066352, 5250082940, 10500165880, 21000331760]

約数ペア:

[(1, 21000331760), (2, 10500165880), (4, 5250082940), (5, 4200066352), (8, 2625041470), (10, 2100033176), (16, 1312520735), (20, 1050016588), (40, 525008294), (80, 262504147), (2287, 9182480), (4574, 4591240), (9148, 2295620), (11435, 1836496), (18296, 1147810), (22870, 918248), (36592, 573905), (45740, 459124), (91480, 229562), (114781, 182960)]