21315866

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{74531}}^1$

素因数の和:74557

約数の個数: 16

約数和(自身を含む): 37564128

約数和(自身を除く): 16248262

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 74531, 149062, 819841, 968903, 1639682, 1937806, 10657933, 21315866]

約数ペア:

[(1, 21315866), (2, 10657933), (11, 1937806), (13, 1639682), (22, 968903), (26, 819841), (143, 149062), (286, 74531)]