21905156775

素因数分解:

$3^1\times 5^2\times {\mathrm{103}}^1\times {\mathrm{149}}^1\times {\mathrm{19031}}^1$

素因数の和:19296

約数の個数: 48

約数和(自身を含む): 36815500800

約数和(自身を除く): 14910344025

約数列:

[1, 3, 5, 15, 25, 75, 103, 149, 309, 447, 515, 745, 1545, 2235, 2575, 3725, 7725, 11175, 15347, 19031, 46041, 57093, 76735, 95155, 230205, 285465, 383675, 475775, 1151025, 1427325, 1960193, 2835619, 5880579, 8506857, 9800965, 14178095, 29402895, 42534285, 49004825, 70890475, 147014475, 212671425, 292068757, 876206271, 1460343785, 4381031355, 7301718925, 21905156775]

約数ペア:

[(1, 21905156775), (3, 7301718925), (5, 4381031355), (15, 1460343785), (25, 876206271), (75, 292068757), (103, 212671425), (149, 147014475), (309, 70890475), (447, 49004825), (515, 42534285), (745, 29402895), (1545, 14178095), (2235, 9800965), (2575, 8506857), (3725, 5880579), (7725, 2835619), (11175, 1960193), (15347, 1427325), (19031, 1151025), (46041, 475775), (57093, 383675), (76735, 285465), (95155, 230205)]