890905

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:216

約数の個数: 16

約数和(自身を含む): 1142784

約数和(自身を除く): 251879

約数列:

[1, 5, 23, 61, 115, 127, 305, 635, 1403, 2921, 7015, 7747, 14605, 38735, 178181, 890905]

約数ペア:

[(1, 890905), (5, 178181), (23, 38735), (61, 14605), (115, 7747), (127, 7015), (305, 2921), (635, 1403)]