18642040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1291}}^1$

素因数の和:1340

約数の個数: 48

約数和(自身を含む): 44302680

約数和(自身を除く): 25660640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1291, 1444, 1805, 2582, 2888, 3610, 5164, 6455, 7220, 10328, 12910, 14440, 24529, 25820, 49058, 51640, 98116, 122645, 196232, 245290, 466051, 490580, 932102, 981160, 1864204, 2330255, 3728408, 4660510, 9321020, 18642040]

約数ペア:

[(1, 18642040), (2, 9321020), (4, 4660510), (5, 3728408), (8, 2330255), (10, 1864204), (19, 981160), (20, 932102), (38, 490580), (40, 466051), (76, 245290), (95, 196232), (152, 122645), (190, 98116), (361, 51640), (380, 49058), (722, 25820), (760, 24529), (1291, 14440), (1444, 12910), (1805, 10328), (2582, 7220), (2888, 6455), (3610, 5164)]