209920705

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{431}}^1\times {\mathrm{3359}}^1$

素因数の和:3824

約数の個数: 16

約数和(自身を含む): 261273600

約数和(自身を除く): 51352895

約数列:

[1, 5, 29, 145, 431, 2155, 3359, 12499, 16795, 62495, 97411, 487055, 1447729, 7238645, 41984141, 209920705]

約数ペア:

[(1, 209920705), (5, 41984141), (29, 7238645), (145, 1447729), (431, 487055), (2155, 97411), (3359, 62495), (12499, 16795)]