18642555

素因数分解:

$3^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{241}}^1$

素因数の和:449

約数の個数: 40

約数和(自身を含む): 33732864

約数和(自身を除く): 15090309

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 191, 241, 405, 573, 723, 955, 1205, 1719, 2169, 2865, 3615, 5157, 6507, 8595, 10845, 15471, 19521, 25785, 32535, 46031, 77355, 97605, 138093, 230155, 414279, 690465, 1242837, 2071395, 3728511, 6214185, 18642555]

約数ペア:

[(1, 18642555), (3, 6214185), (5, 3728511), (9, 2071395), (15, 1242837), (27, 690465), (45, 414279), (81, 230155), (135, 138093), (191, 97605), (241, 77355), (405, 46031), (573, 32535), (723, 25785), (955, 19521), (1205, 15471), (1719, 10845), (2169, 8595), (2865, 6507), (3615, 5157)]