21366528

素因数分解:

$2^8\times 3^1\times {\mathrm{43}}^1\times {\mathrm{647}}^1$

素因数の和:709

約数の個数: 72

約数和(自身を含む): 58278528

約数和(自身を除く): 36912000

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 43, 48, 64, 86, 96, 128, 129, 172, 192, 256, 258, 344, 384, 516, 647, 688, 768, 1032, 1294, 1376, 1941, 2064, 2588, 2752, 3882, 4128, 5176, 5504, 7764, 8256, 10352, 11008, 15528, 16512, 20704, 27821, 31056, 33024, 41408, 55642, 62112, 82816, 83463, 111284, 124224, 165632, 166926, 222568, 248448, 333852, 445136, 496896, 667704, 890272, 1335408, 1780544, 2670816, 3561088, 5341632, 7122176, 10683264, 21366528]

約数ペア:

[(1, 21366528), (2, 10683264), (3, 7122176), (4, 5341632), (6, 3561088), (8, 2670816), (12, 1780544), (16, 1335408), (24, 890272), (32, 667704), (43, 496896), (48, 445136), (64, 333852), (86, 248448), (96, 222568), (128, 166926), (129, 165632), (172, 124224), (192, 111284), (256, 83463), (258, 82816), (344, 62112), (384, 55642), (516, 41408), (647, 33024), (688, 31056), (768, 27821), (1032, 20704), (1294, 16512), (1376, 15528), (1941, 11008), (2064, 10352), (2588, 8256), (2752, 7764), (3882, 5504), (4128, 5176)]