21355696

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70249}}^1$

素因数の和:70276

約数の個数: 20

約数和(自身を含む): 43555000

約数和(自身を除く): 22199304

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70249, 140498, 280996, 561992, 1123984, 1334731, 2669462, 5338924, 10677848, 21355696]

約数ペア:

[(1, 21355696), (2, 10677848), (4, 5338924), (8, 2669462), (16, 1334731), (19, 1123984), (38, 561992), (76, 280996), (152, 140498), (304, 70249)]