21427588

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{43}}^1$

素因数の和:141

約数の個数: 72

約数和(自身を含む): 48535872

約数和(自身を除く): 27108284

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 37, 43, 52, 74, 86, 91, 148, 172, 182, 259, 301, 364, 481, 518, 559, 602, 962, 1036, 1118, 1204, 1369, 1591, 1924, 2236, 2738, 3182, 3367, 3913, 5476, 6364, 6734, 7826, 9583, 11137, 13468, 15652, 17797, 19166, 20683, 22274, 35594, 38332, 41366, 44548, 58867, 71188, 82732, 117734, 124579, 144781, 235468, 249158, 289562, 412069, 498316, 579124, 765271, 824138, 1530542, 1648276, 3061084, 5356897, 10713794, 21427588]

約数ペア:

[(1, 21427588), (2, 10713794), (4, 5356897), (7, 3061084), (13, 1648276), (14, 1530542), (26, 824138), (28, 765271), (37, 579124), (43, 498316), (52, 412069), (74, 289562), (86, 249158), (91, 235468), (148, 144781), (172, 124579), (182, 117734), (259, 82732), (301, 71188), (364, 58867), (481, 44548), (518, 41366), (559, 38332), (602, 35594), (962, 22274), (1036, 20683), (1118, 19166), (1204, 17797), (1369, 15652), (1591, 13468), (1924, 11137), (2236, 9583), (2738, 7826), (3182, 6734), (3367, 6364), (3913, 5476)]