21073725

素因数分解:

$3^2\times 5^2\times {\mathrm{229}}^1\times {\mathrm{409}}^1$

素因数の和:654

約数の個数: 36

約数和(自身を含む): 38002900

約数和(自身を除く): 16929175

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 229, 409, 687, 1145, 1227, 2045, 2061, 3435, 3681, 5725, 6135, 10225, 10305, 17175, 18405, 30675, 51525, 92025, 93661, 280983, 468305, 842949, 1404915, 2341525, 4214745, 7024575, 21073725]

約数ペア:

[(1, 21073725), (3, 7024575), (5, 4214745), (9, 2341525), (15, 1404915), (25, 842949), (45, 468305), (75, 280983), (225, 93661), (229, 92025), (409, 51525), (687, 30675), (1145, 18405), (1227, 17175), (2045, 10305), (2061, 10225), (3435, 6135), (3681, 5725)]