21284040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{193}}^1\times {\mathrm{919}}^1$

素因数の和:1126

約数の個数: 64

約数和(自身を含む): 64252800

約数和(自身を除く): 42968760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 193, 386, 579, 772, 919, 965, 1158, 1544, 1838, 1930, 2316, 2757, 2895, 3676, 3860, 4595, 4632, 5514, 5790, 7352, 7720, 9190, 11028, 11580, 13785, 18380, 22056, 23160, 27570, 36760, 55140, 110280, 177367, 354734, 532101, 709468, 886835, 1064202, 1418936, 1773670, 2128404, 2660505, 3547340, 4256808, 5321010, 7094680, 10642020, 21284040]

約数ペア:

[(1, 21284040), (2, 10642020), (3, 7094680), (4, 5321010), (5, 4256808), (6, 3547340), (8, 2660505), (10, 2128404), (12, 1773670), (15, 1418936), (20, 1064202), (24, 886835), (30, 709468), (40, 532101), (60, 354734), (120, 177367), (193, 110280), (386, 55140), (579, 36760), (772, 27570), (919, 23160), (965, 22056), (1158, 18380), (1544, 13785), (1838, 11580), (1930, 11028), (2316, 9190), (2757, 7720), (2895, 7352), (3676, 5790), (3860, 5514), (4595, 4632)]