21393996

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{4729}}^1$

素因数の和:4778

約数の個数: 48

約数和(自身を含む): 55624800

約数和(自身を除く): 34230804

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 29, 39, 52, 58, 78, 87, 116, 156, 174, 348, 377, 754, 1131, 1508, 2262, 4524, 4729, 9458, 14187, 18916, 28374, 56748, 61477, 122954, 137141, 184431, 245908, 274282, 368862, 411423, 548564, 737724, 822846, 1645692, 1782833, 3565666, 5348499, 7131332, 10696998, 21393996]

約数ペア:

[(1, 21393996), (2, 10696998), (3, 7131332), (4, 5348499), (6, 3565666), (12, 1782833), (13, 1645692), (26, 822846), (29, 737724), (39, 548564), (52, 411423), (58, 368862), (78, 274282), (87, 245908), (116, 184431), (156, 137141), (174, 122954), (348, 61477), (377, 56748), (754, 28374), (1131, 18916), (1508, 14187), (2262, 9458), (4524, 4729)]