21100788

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^2\times {\mathrm{317}}^1$

素因数の和:413

約数の個数: 54

約数和(自身を含む): 54779634

約数和(自身を除く): 33678846

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 258, 317, 387, 516, 634, 774, 951, 1268, 1548, 1849, 1902, 2853, 3698, 3804, 5547, 5706, 7396, 11094, 11412, 13631, 16641, 22188, 27262, 33282, 40893, 54524, 66564, 81786, 122679, 163572, 245358, 490716, 586133, 1172266, 1758399, 2344532, 3516798, 5275197, 7033596, 10550394, 21100788]

約数ペア:

[(1, 21100788), (2, 10550394), (3, 7033596), (4, 5275197), (6, 3516798), (9, 2344532), (12, 1758399), (18, 1172266), (36, 586133), (43, 490716), (86, 245358), (129, 163572), (172, 122679), (258, 81786), (317, 66564), (387, 54524), (516, 40893), (634, 33282), (774, 27262), (951, 22188), (1268, 16641), (1548, 13631), (1849, 11412), (1902, 11094), (2853, 7396), (3698, 5706), (3804, 5547)]