195980

素因数分解:

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

素因数の和:289

約数の個数: 24

約数和(自身を含む): 423360

約数和(自身を除く): 227380

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 239, 410, 478, 820, 956, 1195, 2390, 4780, 9799, 19598, 39196, 48995, 97990, 195980]

約数ペア:

[(1, 195980), (2, 97990), (4, 48995), (5, 39196), (10, 19598), (20, 9799), (41, 4780), (82, 2390), (164, 1195), (205, 956), (239, 820), (410, 478)]