391960

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 907200

約数和(自身を除く): 515240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 239, 328, 410, 478, 820, 956, 1195, 1640, 1912, 2390, 4780, 9560, 9799, 19598, 39196, 48995, 78392, 97990, 195980, 391960]

約数ペア:

[(1, 391960), (2, 195980), (4, 97990), (5, 78392), (8, 48995), (10, 39196), (20, 19598), (40, 9799), (41, 9560), (82, 4780), (164, 2390), (205, 1912), (239, 1640), (328, 1195), (410, 956), (478, 820)]