21985696

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{599}}^1$

素因数の和:677

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 23979104

約数列:

[1, 2, 4, 8, 16, 31, 32, 37, 62, 74, 124, 148, 248, 296, 496, 592, 599, 992, 1147, 1184, 1198, 2294, 2396, 4588, 4792, 9176, 9584, 18352, 18569, 19168, 22163, 36704, 37138, 44326, 74276, 88652, 148552, 177304, 297104, 354608, 594208, 687053, 709216, 1374106, 2748212, 5496424, 10992848, 21985696]

約数ペア:

[(1, 21985696), (2, 10992848), (4, 5496424), (8, 2748212), (16, 1374106), (31, 709216), (32, 687053), (37, 594208), (62, 354608), (74, 297104), (124, 177304), (148, 148552), (248, 88652), (296, 74276), (496, 44326), (592, 37138), (599, 36704), (992, 22163), (1147, 19168), (1184, 18569), (1198, 18352), (2294, 9584), (2396, 9176), (4588, 4792)]