21086486

素因数分解:

$2^1\times {\mathrm{109}}^1\times {\mathrm{197}}^1\times {\mathrm{491}}^1$

素因数の和:799

約数の個数: 16

約数和(自身を含む): 32147280

約数和(自身を除く): 11060794

約数列:

[1, 2, 109, 197, 218, 394, 491, 982, 21473, 42946, 53519, 96727, 107038, 193454, 10543243, 21086486]

約数ペア:

[(1, 21086486), (2, 10543243), (109, 193454), (197, 107038), (218, 96727), (394, 53519), (491, 42946), (982, 21473)]