18903015

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{9769}}^1$

素因数の和:9823

約数の個数: 24

約数和(自身を含む): 33530640

約数和(自身を除く): 14627625

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 9769, 29307, 48845, 87921, 146535, 420067, 439605, 1260201, 2100335, 3780603, 6301005, 18903015]

約数ペア:

[(1, 18903015), (3, 6301005), (5, 3780603), (9, 2100335), (15, 1260201), (43, 439605), (45, 420067), (129, 146535), (215, 87921), (387, 48845), (645, 29307), (1935, 9769)]