21245016

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{457}}^1$

素因数の和:628

約数の個数: 64

約数和(自身を含む): 57708000

約数和(自身を除く): 36462984

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 149, 156, 298, 312, 447, 457, 596, 894, 914, 1192, 1371, 1788, 1828, 1937, 2742, 3576, 3656, 3874, 5484, 5811, 5941, 7748, 10968, 11622, 11882, 15496, 17823, 23244, 23764, 35646, 46488, 47528, 68093, 71292, 136186, 142584, 204279, 272372, 408558, 544744, 817116, 885209, 1634232, 1770418, 2655627, 3540836, 5311254, 7081672, 10622508, 21245016]

約数ペア:

[(1, 21245016), (2, 10622508), (3, 7081672), (4, 5311254), (6, 3540836), (8, 2655627), (12, 1770418), (13, 1634232), (24, 885209), (26, 817116), (39, 544744), (52, 408558), (78, 272372), (104, 204279), (149, 142584), (156, 136186), (298, 71292), (312, 68093), (447, 47528), (457, 46488), (596, 35646), (894, 23764), (914, 23244), (1192, 17823), (1371, 15496), (1788, 11882), (1828, 11622), (1937, 10968), (2742, 7748), (3576, 5941), (3656, 5811), (3874, 5484)]