209213225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{61}}^2\times {\mathrm{173}}^1$

素因数の和:318

約数の個数: 36

約数和(自身を含む): 285677028

約数和(自身を除く): 76463803

約数列:

[1, 5, 13, 25, 61, 65, 173, 305, 325, 793, 865, 1525, 2249, 3721, 3965, 4325, 10553, 11245, 18605, 19825, 48373, 52765, 56225, 93025, 137189, 241865, 263825, 643733, 685945, 1209325, 3218665, 3429725, 8368529, 16093325, 41842645, 209213225]

約数ペア:

[(1, 209213225), (5, 41842645), (13, 16093325), (25, 8368529), (61, 3429725), (65, 3218665), (173, 1209325), (305, 685945), (325, 643733), (793, 263825), (865, 241865), (1525, 137189), (2249, 93025), (3721, 56225), (3965, 52765), (4325, 48373), (10553, 19825), (11245, 18605)]