990231

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{811}}^1$

素因数の和:862

約数の個数: 16

約数和(自身を含む): 1481088

約数和(自身を除く): 490857

約数列:

[1, 3, 11, 33, 37, 111, 407, 811, 1221, 2433, 8921, 26763, 30007, 90021, 330077, 990231]

約数ペア:

[(1, 990231), (3, 330077), (11, 90021), (33, 30007), (37, 26763), (111, 8921), (407, 2433), (811, 1221)]