21589988

素因数分解:

$2^2\times 7^2\times {\mathrm{59}}^1\times {\mathrm{1867}}^1$

素因数の和:1944

約数の個数: 36

約数和(自身を含む): 44719920

約数和(自身を除く): 23129932

約数列:

[1, 2, 4, 7, 14, 28, 49, 59, 98, 118, 196, 236, 413, 826, 1652, 1867, 2891, 3734, 5782, 7468, 11564, 13069, 26138, 52276, 91483, 110153, 182966, 220306, 365932, 440612, 771071, 1542142, 3084284, 5397497, 10794994, 21589988]

約数ペア:

[(1, 21589988), (2, 10794994), (4, 5397497), (7, 3084284), (14, 1542142), (28, 771071), (49, 440612), (59, 365932), (98, 220306), (118, 182966), (196, 110153), (236, 91483), (413, 52276), (826, 26138), (1652, 13069), (1867, 11564), (2891, 7468), (3734, 5782)]