21043264

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{421}}^1$

素因数の和:515

約数の個数: 56

約数和(自身を含む): 46305216

約数和(自身を除く): 25261952

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 71, 88, 142, 176, 284, 352, 421, 568, 704, 781, 842, 1136, 1562, 1684, 2272, 3124, 3368, 4544, 4631, 6248, 6736, 9262, 12496, 13472, 18524, 24992, 26944, 29891, 37048, 49984, 59782, 74096, 119564, 148192, 239128, 296384, 328801, 478256, 657602, 956512, 1315204, 1913024, 2630408, 5260816, 10521632, 21043264]

約数ペア:

[(1, 21043264), (2, 10521632), (4, 5260816), (8, 2630408), (11, 1913024), (16, 1315204), (22, 956512), (32, 657602), (44, 478256), (64, 328801), (71, 296384), (88, 239128), (142, 148192), (176, 119564), (284, 74096), (352, 59782), (421, 49984), (568, 37048), (704, 29891), (781, 26944), (842, 24992), (1136, 18524), (1562, 13472), (1684, 12496), (2272, 9262), (3124, 6736), (3368, 6248), (4544, 4631)]