18691868

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{3559}}^1$

素因数の和:3677

約数の個数: 24

約数和(自身を含む): 35585760

約数和(自身を除く): 16893892

約数列:

[1, 2, 4, 13, 26, 52, 101, 202, 404, 1313, 2626, 3559, 5252, 7118, 14236, 46267, 92534, 185068, 359459, 718918, 1437836, 4672967, 9345934, 18691868]

約数ペア:

[(1, 18691868), (2, 9345934), (4, 4672967), (13, 1437836), (26, 718918), (52, 359459), (101, 185068), (202, 92534), (404, 46267), (1313, 14236), (2626, 7118), (3559, 5252)]