21487528

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{229}}^1\times {\mathrm{317}}^1$

素因数の和:589

約数の個数: 32

約数和(自身を含む): 41689800

約数和(自身を除く): 20202272

約数列:

[1, 2, 4, 8, 37, 74, 148, 229, 296, 317, 458, 634, 916, 1268, 1832, 2536, 8473, 11729, 16946, 23458, 33892, 46916, 67784, 72593, 93832, 145186, 290372, 580744, 2685941, 5371882, 10743764, 21487528]

約数ペア:

[(1, 21487528), (2, 10743764), (4, 5371882), (8, 2685941), (37, 580744), (74, 290372), (148, 145186), (229, 93832), (296, 72593), (317, 67784), (458, 46916), (634, 33892), (916, 23458), (1268, 16946), (1832, 11729), (2536, 8473)]