19798980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{4177}}^1$

素因数の和:4268

約数の個数: 48

約数和(自身を含む): 56152320

約数和(自身を除く): 36353340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 79, 158, 237, 316, 395, 474, 790, 948, 1185, 1580, 2370, 4177, 4740, 8354, 12531, 16708, 20885, 25062, 41770, 50124, 62655, 83540, 125310, 250620, 329983, 659966, 989949, 1319932, 1649915, 1979898, 3299830, 3959796, 4949745, 6599660, 9899490, 19798980]

約数ペア:

[(1, 19798980), (2, 9899490), (3, 6599660), (4, 4949745), (5, 3959796), (6, 3299830), (10, 1979898), (12, 1649915), (15, 1319932), (20, 989949), (30, 659966), (60, 329983), (79, 250620), (158, 125310), (237, 83540), (316, 62655), (395, 50124), (474, 41770), (790, 25062), (948, 20885), (1185, 16708), (1580, 12531), (2370, 8354), (4177, 4740)]