209363615

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{991}}^1$

素因数の和:1103

約数の個数: 32

約数和(自身を含む): 274268160

約数和(自身を除く): 64904545

約数列:

[1, 5, 29, 31, 47, 145, 155, 235, 899, 991, 1363, 1457, 4495, 4955, 6815, 7285, 28739, 30721, 42253, 46577, 143695, 153605, 211265, 232885, 890909, 1350733, 1443887, 4454545, 6753665, 7219435, 41872723, 209363615]

約数ペア:

[(1, 209363615), (5, 41872723), (29, 7219435), (31, 6753665), (47, 4454545), (145, 1443887), (155, 1350733), (235, 890909), (899, 232885), (991, 211265), (1363, 153605), (1457, 143695), (4495, 46577), (4955, 42253), (6815, 30721), (7285, 28739)]