21002373

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 36481536

約数和(自身を除く): 15479163

約数列:

[1, 3, 7, 9, 21, 41, 47, 63, 123, 141, 173, 287, 329, 369, 423, 519, 861, 987, 1211, 1557, 1927, 2583, 2961, 3633, 5781, 7093, 8131, 10899, 13489, 17343, 21279, 24393, 40467, 49651, 56917, 63837, 73179, 121401, 148953, 170751, 333371, 446859, 512253, 1000113, 2333597, 3000339, 7000791, 21002373]

約数ペア:

[(1, 21002373), (3, 7000791), (7, 3000339), (9, 2333597), (21, 1000113), (41, 512253), (47, 446859), (63, 333371), (123, 170751), (141, 148953), (173, 121401), (287, 73179), (329, 63837), (369, 56917), (423, 49651), (519, 40467), (861, 24393), (987, 21279), (1211, 17343), (1557, 13489), (1927, 10899), (2583, 8131), (2961, 7093), (3633, 5781)]