20545690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{10987}}^1$

素因数の和:11022

約数の個数: 32

約数和(自身を含む): 42721344

約数和(自身を除く): 22175654

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 170, 187, 374, 935, 1870, 10987, 21974, 54935, 109870, 120857, 186779, 241714, 373558, 604285, 933895, 1208570, 1867790, 2054569, 4109138, 10272845, 20545690]

約数ペア:

[(1, 20545690), (2, 10272845), (5, 4109138), (10, 2054569), (11, 1867790), (17, 1208570), (22, 933895), (34, 604285), (55, 373558), (85, 241714), (110, 186779), (170, 120857), (187, 109870), (374, 54935), (935, 21974), (1870, 10987)]