21290525

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{607}}^1$

素因数の和:701

約数の個数: 24

約数和(自身を含む): 28045824

約数和(自身を除く): 6755299

約数列:

[1, 5, 23, 25, 61, 115, 305, 575, 607, 1403, 1525, 3035, 7015, 13961, 15175, 35075, 37027, 69805, 185135, 349025, 851621, 925675, 4258105, 21290525]

約数ペア:

[(1, 21290525), (5, 4258105), (23, 925675), (25, 851621), (61, 349025), (115, 185135), (305, 69805), (575, 37027), (607, 35075), (1403, 15175), (1525, 13961), (3035, 7015)]