78401560

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1\times {\mathrm{239}}^1$

素因数の和:448

約数の個数: 64

約数和(自身を含む): 181440000

約数和(自身を除く): 103038440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 139, 236, 239, 278, 295, 472, 478, 556, 590, 695, 956, 1112, 1180, 1195, 1390, 1912, 2360, 2390, 2780, 4780, 5560, 8201, 9560, 14101, 16402, 28202, 32804, 33221, 41005, 56404, 65608, 66442, 70505, 82010, 112808, 132884, 141010, 164020, 166105, 265768, 282020, 328040, 332210, 564040, 664420, 1328840, 1960039, 3920078, 7840156, 9800195, 15680312, 19600390, 39200780, 78401560]

約数ペア:

[(1, 78401560), (2, 39200780), (4, 19600390), (5, 15680312), (8, 9800195), (10, 7840156), (20, 3920078), (40, 1960039), (59, 1328840), (118, 664420), (139, 564040), (236, 332210), (239, 328040), (278, 282020), (295, 265768), (472, 166105), (478, 164020), (556, 141010), (590, 132884), (695, 112808), (956, 82010), (1112, 70505), (1180, 66442), (1195, 65608), (1390, 56404), (1912, 41005), (2360, 33221), (2390, 32804), (2780, 28202), (4780, 16402), (5560, 14101), (8201, 9560)]