20217808

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{7477}}^1$

素因数の和:7511

約数の個数: 30

約数和(自身を含む): 42422694

約数和(自身を除く): 22204886

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 7477, 14954, 29908, 59816, 97201, 119632, 194402, 388804, 777608, 1263613, 1555216, 2527226, 5054452, 10108904, 20217808]

約数ペア:

[(1, 20217808), (2, 10108904), (4, 5054452), (8, 2527226), (13, 1555216), (16, 1263613), (26, 777608), (52, 388804), (104, 194402), (169, 119632), (208, 97201), (338, 59816), (676, 29908), (1352, 14954), (2704, 7477)]