21025509

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{307}}^1\times {\mathrm{617}}^1$

素因数の和:964

約数の個数: 16

約数和(自身を含む): 28932288

約数和(自身を除く): 7906779

約数列:

[1, 3, 37, 111, 307, 617, 921, 1851, 11359, 22829, 34077, 68487, 189419, 568257, 7008503, 21025509]

約数ペア:

[(1, 21025509), (3, 7008503), (37, 568257), (111, 189419), (307, 68487), (617, 34077), (921, 22829), (1851, 11359)]