639711

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:100

約数の個数: 32

約数和(自身を含む): 1056000

約数和(自身を除く): 416289

約数列:

[1, 3, 9, 19, 27, 29, 43, 57, 87, 129, 171, 261, 387, 513, 551, 783, 817, 1161, 1247, 1653, 2451, 3741, 4959, 7353, 11223, 14877, 22059, 23693, 33669, 71079, 213237, 639711]

約数ペア:

[(1, 639711), (3, 213237), (9, 71079), (19, 33669), (27, 23693), (29, 22059), (43, 14877), (57, 11223), (87, 7353), (129, 4959), (171, 3741), (261, 2451), (387, 1653), (513, 1247), (551, 1161), (783, 817)]