18742555

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 25623360

約数和(自身を除く): 6880805

約数列:

[1, 5, 13, 29, 61, 65, 145, 163, 305, 377, 793, 815, 1769, 1885, 2119, 3965, 4727, 8845, 9943, 10595, 22997, 23635, 49715, 61451, 114985, 129259, 288347, 307255, 646295, 1441735, 3748511, 18742555]

約数ペア:

[(1, 18742555), (5, 3748511), (13, 1441735), (29, 646295), (61, 307255), (65, 288347), (145, 129259), (163, 114985), (305, 61451), (377, 49715), (793, 23635), (815, 22997), (1769, 10595), (1885, 9943), (2119, 8845), (3965, 4727)]