19642220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2437}}^1$

素因数の和:2490

約数の個数: 48

約数和(自身を含む): 45873408

約数和(自身を除く): 26231188

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 2437, 4030, 4874, 8060, 9748, 12185, 24370, 31681, 48740, 63362, 75547, 126724, 151094, 158405, 302188, 316810, 377735, 633620, 755470, 982111, 1510940, 1964222, 3928444, 4910555, 9821110, 19642220]

約数ペア:

[(1, 19642220), (2, 9821110), (4, 4910555), (5, 3928444), (10, 1964222), (13, 1510940), (20, 982111), (26, 755470), (31, 633620), (52, 377735), (62, 316810), (65, 302188), (124, 158405), (130, 151094), (155, 126724), (260, 75547), (310, 63362), (403, 48740), (620, 31681), (806, 24370), (1612, 12185), (2015, 9748), (2437, 8060), (4030, 4874)]