640236483

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{27329}}^1$

素因数の和:27491

約数の個数: 24

約数和(自身を含む): 980600400

約数和(自身を除く): 340363917

約数列:

[1, 3, 9, 19, 57, 137, 171, 411, 1233, 2603, 7809, 23427, 27329, 81987, 245961, 519251, 1557753, 3744073, 4673259, 11232219, 33696657, 71137387, 213412161, 640236483]

約数ペア:

[(1, 640236483), (3, 213412161), (9, 71137387), (19, 33696657), (57, 11232219), (137, 4673259), (171, 3744073), (411, 1557753), (1233, 519251), (2603, 245961), (7809, 81987), (23427, 27329)]