21253408

素因数分解:

$2^5\times {\mathrm{11}}^3\times {\mathrm{499}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 46116000

約数和(自身を除く): 24862592

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 121, 176, 242, 352, 484, 499, 968, 998, 1331, 1936, 1996, 2662, 3872, 3992, 5324, 5489, 7984, 10648, 10978, 15968, 21296, 21956, 42592, 43912, 60379, 87824, 120758, 175648, 241516, 483032, 664169, 966064, 1328338, 1932128, 2656676, 5313352, 10626704, 21253408]

約数ペア:

[(1, 21253408), (2, 10626704), (4, 5313352), (8, 2656676), (11, 1932128), (16, 1328338), (22, 966064), (32, 664169), (44, 483032), (88, 241516), (121, 175648), (176, 120758), (242, 87824), (352, 60379), (484, 43912), (499, 42592), (968, 21956), (998, 21296), (1331, 15968), (1936, 10978), (1996, 10648), (2662, 7984), (3872, 5489), (3992, 5324)]