21675885

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{383}}^1$

素因数の和:423

約数の個数: 64

約数和(自身を含む): 44236800

約数和(自身を除く): 22560915

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 343, 383, 385, 539, 735, 1029, 1149, 1155, 1617, 1715, 1915, 2681, 2695, 3773, 4213, 5145, 5745, 8043, 8085, 11319, 12639, 13405, 18767, 18865, 21065, 29491, 40215, 56301, 56595, 63195, 88473, 93835, 131369, 147455, 206437, 281505, 394107, 442365, 619311, 656845, 1032185, 1445059, 1970535, 3096555, 4335177, 7225295, 21675885]

約数ペア:

[(1, 21675885), (3, 7225295), (5, 4335177), (7, 3096555), (11, 1970535), (15, 1445059), (21, 1032185), (33, 656845), (35, 619311), (49, 442365), (55, 394107), (77, 281505), (105, 206437), (147, 147455), (165, 131369), (231, 93835), (245, 88473), (343, 63195), (383, 56595), (385, 56301), (539, 40215), (735, 29491), (1029, 21065), (1149, 18865), (1155, 18767), (1617, 13405), (1715, 12639), (1915, 11319), (2681, 8085), (2695, 8043), (3773, 5745), (4213, 5145)]