31971429

素因数分解:

$3^4\times 7^1\times {\mathrm{113}}^1\times {\mathrm{499}}^1$

素因数の和:631

約数の個数: 40

約数和(自身を含む): 55176000

約数和(自身を除く): 23204571

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 113, 189, 339, 499, 567, 791, 1017, 1497, 2373, 3051, 3493, 4491, 7119, 9153, 10479, 13473, 21357, 31437, 40419, 56387, 64071, 94311, 169161, 282933, 394709, 507483, 1184127, 1522449, 3552381, 4567347, 10657143, 31971429]

約数ペア:

[(1, 31971429), (3, 10657143), (7, 4567347), (9, 3552381), (21, 1522449), (27, 1184127), (63, 507483), (81, 394709), (113, 282933), (189, 169161), (339, 94311), (499, 64071), (567, 56387), (791, 40419), (1017, 31437), (1497, 21357), (2373, 13473), (3051, 10479), (3493, 9153), (4491, 7119)]