18645980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{22739}}^1$

素因数の和:22789

約数の個数: 24

約数和(自身を含む): 40113360

約数和(自身を除く): 21467380

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 22739, 45478, 90956, 113695, 227390, 454780, 932299, 1864598, 3729196, 4661495, 9322990, 18645980]

約数ペア:

[(1, 18645980), (2, 9322990), (4, 4661495), (5, 3729196), (10, 1864598), (20, 932299), (41, 454780), (82, 227390), (164, 113695), (205, 90956), (410, 45478), (820, 22739)]