21204675

素因数分解:

$3^2\times 5^2\times {\mathrm{73}}^1\times {\mathrm{1291}}^1$

素因数の和:1380

約数の個数: 36

約数和(自身を含む): 38530024

約数和(自身を除く): 17325349

約数列:

[1, 3, 5, 9, 15, 25, 45, 73, 75, 219, 225, 365, 657, 1095, 1291, 1825, 3285, 3873, 5475, 6455, 11619, 16425, 19365, 32275, 58095, 94243, 96825, 282729, 290475, 471215, 848187, 1413645, 2356075, 4240935, 7068225, 21204675]

約数ペア:

[(1, 21204675), (3, 7068225), (5, 4240935), (9, 2356075), (15, 1413645), (25, 848187), (45, 471215), (73, 290475), (75, 282729), (219, 96825), (225, 94243), (365, 58095), (657, 32275), (1095, 19365), (1291, 16425), (1825, 11619), (3285, 6455), (3873, 5475)]