21257262

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{283}}^1$

素因数の和:414

約数の個数: 64

約数和(自身を含む): 51528960

約数和(自身を除く): 30271698

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 107, 117, 214, 234, 283, 321, 351, 566, 642, 702, 849, 963, 1391, 1698, 1926, 2547, 2782, 2889, 3679, 4173, 5094, 5778, 7358, 7641, 8346, 11037, 12519, 15282, 22074, 25038, 30281, 33111, 37557, 60562, 66222, 75114, 90843, 99333, 181686, 198666, 272529, 393653, 545058, 787306, 817587, 1180959, 1635174, 2361918, 3542877, 7085754, 10628631, 21257262]

約数ペア:

[(1, 21257262), (2, 10628631), (3, 7085754), (6, 3542877), (9, 2361918), (13, 1635174), (18, 1180959), (26, 817587), (27, 787306), (39, 545058), (54, 393653), (78, 272529), (107, 198666), (117, 181686), (214, 99333), (234, 90843), (283, 75114), (321, 66222), (351, 60562), (566, 37557), (642, 33111), (702, 30281), (849, 25038), (963, 22074), (1391, 15282), (1698, 12519), (1926, 11037), (2547, 8346), (2782, 7641), (2889, 7358), (3679, 5778), (4173, 5094)]