320858620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{391291}}^1$

素因数の和:391341

約数の個数: 24

約数和(自身を含む): 690239088

約数和(自身を除く): 369380468

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 391291, 782582, 1565164, 1956455, 3912910, 7825820, 16042931, 32085862, 64171724, 80214655, 160429310, 320858620]

約数ペア:

[(1, 320858620), (2, 160429310), (4, 80214655), (5, 64171724), (10, 32085862), (20, 16042931), (41, 7825820), (82, 3912910), (164, 1956455), (205, 1565164), (410, 782582), (820, 391291)]