21601525

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:262

約数の個数: 36

約数和(自身を含む): 30394756

約数和(自身を除く): 8793231

約数列:

[1, 5, 11, 25, 37, 55, 121, 185, 193, 275, 407, 605, 925, 965, 2035, 2123, 3025, 4477, 4825, 7141, 10175, 10615, 22385, 23353, 35705, 53075, 78551, 111925, 116765, 178525, 392755, 583825, 864061, 1963775, 4320305, 21601525]

約数ペア:

[(1, 21601525), (5, 4320305), (11, 1963775), (25, 864061), (37, 583825), (55, 392755), (121, 178525), (185, 116765), (193, 111925), (275, 78551), (407, 53075), (605, 35705), (925, 23353), (965, 22385), (2035, 10615), (2123, 10175), (3025, 7141), (4477, 4825)]