21146712

素因数分解:

$2^3\times 3^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{661}}^1$

素因数の和:744

約数の個数: 64

約数和(自身を含む): 55925760

約数和(自身を除く): 34779048

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 31, 43, 62, 86, 93, 124, 129, 172, 186, 248, 258, 344, 372, 516, 661, 744, 1032, 1322, 1333, 1983, 2644, 2666, 3966, 3999, 5288, 5332, 7932, 7998, 10664, 15864, 15996, 20491, 28423, 31992, 40982, 56846, 61473, 81964, 85269, 113692, 122946, 163928, 170538, 227384, 245892, 341076, 491784, 682152, 881113, 1762226, 2643339, 3524452, 5286678, 7048904, 10573356, 21146712]

約数ペア:

[(1, 21146712), (2, 10573356), (3, 7048904), (4, 5286678), (6, 3524452), (8, 2643339), (12, 1762226), (24, 881113), (31, 682152), (43, 491784), (62, 341076), (86, 245892), (93, 227384), (124, 170538), (129, 163928), (172, 122946), (186, 113692), (248, 85269), (258, 81964), (344, 61473), (372, 56846), (516, 40982), (661, 31992), (744, 28423), (1032, 20491), (1322, 15996), (1333, 15864), (1983, 10664), (2644, 7998), (2666, 7932), (3966, 5332), (3999, 5288)]