17878180

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 38808000

約数和(自身を除く): 20929820

約数列:

[1, 2, 4, 5, 10, 20, 59, 109, 118, 139, 218, 236, 278, 295, 436, 545, 556, 590, 695, 1090, 1180, 1390, 2180, 2780, 6431, 8201, 12862, 15151, 16402, 25724, 30302, 32155, 32804, 41005, 60604, 64310, 75755, 82010, 128620, 151510, 164020, 303020, 893909, 1787818, 3575636, 4469545, 8939090, 17878180]

約数ペア:

[(1, 17878180), (2, 8939090), (4, 4469545), (5, 3575636), (10, 1787818), (20, 893909), (59, 303020), (109, 164020), (118, 151510), (139, 128620), (218, 82010), (236, 75755), (278, 64310), (295, 60604), (436, 41005), (545, 32804), (556, 32155), (590, 30302), (695, 25724), (1090, 16402), (1180, 15151), (1390, 12862), (2180, 8201), (2780, 6431)]