1989929660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{809}}^1\times {\mathrm{6473}}^1$

素因数の和:7310

約数の個数: 48

約数和(自身を含む): 4404909600

約数和(自身を除く): 2414979940

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 809, 1618, 3236, 4045, 6473, 8090, 12946, 15371, 16180, 25892, 30742, 32365, 61484, 64730, 76855, 122987, 129460, 153710, 245974, 307420, 491948, 614935, 1229870, 2459740, 5236657, 10473314, 20946628, 26183285, 52366570, 99496483, 104733140, 198992966, 397985932, 497482415, 994964830, 1989929660]

約数ペア:

[(1, 1989929660), (2, 994964830), (4, 497482415), (5, 397985932), (10, 198992966), (19, 104733140), (20, 99496483), (38, 52366570), (76, 26183285), (95, 20946628), (190, 10473314), (380, 5236657), (809, 2459740), (1618, 1229870), (3236, 614935), (4045, 491948), (6473, 307420), (8090, 245974), (12946, 153710), (15371, 129460), (16180, 122987), (25892, 76855), (30742, 64730), (32365, 61484)]