28696990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{2081}}^1$

素因数の和:2292

約数の個数: 32

約数和(自身を含む): 59361984

約数和(自身を除く): 30664994

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 197, 394, 985, 1379, 1970, 2081, 2758, 4162, 6895, 10405, 13790, 14567, 20810, 29134, 72835, 145670, 409957, 819914, 2049785, 2869699, 4099570, 5739398, 14348495, 28696990]

約数ペア:

[(1, 28696990), (2, 14348495), (5, 5739398), (7, 4099570), (10, 2869699), (14, 2049785), (35, 819914), (70, 409957), (197, 145670), (394, 72835), (985, 29134), (1379, 20810), (1970, 14567), (2081, 13790), (2758, 10405), (4162, 6895)]