209008475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{27961}}^1$

素因数の和:28007

約数の個数: 24

約数和(自身を含む): 291252192

約数和(自身を除く): 82243717

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 7475, 27961, 139805, 363493, 643103, 699025, 1817465, 3215515, 8360339, 9087325, 16077575, 41801695, 209008475]

約数ペア:

[(1, 209008475), (5, 41801695), (13, 16077575), (23, 9087325), (25, 8360339), (65, 3215515), (115, 1817465), (299, 699025), (325, 643103), (575, 363493), (1495, 139805), (7475, 27961)]