21874185

素因数分解:

$3^3\times 5^1\times {\mathrm{311}}^1\times {\mathrm{521}}^1$

素因数の和:846

約数の個数: 32

約数和(自身を含む): 39087360

約数和(自身を除く): 17213175

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 311, 521, 933, 1555, 1563, 2605, 2799, 4665, 4689, 7815, 8397, 13995, 14067, 23445, 41985, 70335, 162031, 486093, 810155, 1458279, 2430465, 4374837, 7291395, 21874185]

約数ペア:

[(1, 21874185), (3, 7291395), (5, 4374837), (9, 2430465), (15, 1458279), (27, 810155), (45, 486093), (135, 162031), (311, 70335), (521, 41985), (933, 23445), (1555, 14067), (1563, 13995), (2605, 8397), (2799, 7815), (4665, 4689)]