21275696

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{439}}^1$

素因数の和:693

約数の個数: 40

約数和(自身を含む): 44684640

約数和(自身を除く): 23408944

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 233, 439, 466, 878, 932, 1756, 1864, 3029, 3512, 3728, 5707, 6058, 7024, 11414, 12116, 22828, 24232, 45656, 48464, 91312, 102287, 204574, 409148, 818296, 1329731, 1636592, 2659462, 5318924, 10637848, 21275696]

約数ペア:

[(1, 21275696), (2, 10637848), (4, 5318924), (8, 2659462), (13, 1636592), (16, 1329731), (26, 818296), (52, 409148), (104, 204574), (208, 102287), (233, 91312), (439, 48464), (466, 45656), (878, 24232), (932, 22828), (1756, 12116), (1864, 11414), (3029, 7024), (3512, 6058), (3728, 5707)]