640927

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:166

約数の個数: 16

約数和(自身を含む): 793600

約数和(自身を除く): 152673

約数列:

[1, 7, 19, 61, 79, 133, 427, 553, 1159, 1501, 4819, 8113, 10507, 33733, 91561, 640927]

約数ペア:

[(1, 640927), (7, 91561), (19, 33733), (61, 10507), (79, 8113), (133, 4819), (427, 1501), (553, 1159)]