21426522

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 48335616

約数和(自身を除く): 26909094

約数列:

[1, 2, 3, 6, 13, 26, 39, 53, 71, 73, 78, 106, 142, 146, 159, 213, 219, 318, 426, 438, 689, 923, 949, 1378, 1846, 1898, 2067, 2769, 2847, 3763, 3869, 4134, 5183, 5538, 5694, 7526, 7738, 10366, 11289, 11607, 15549, 22578, 23214, 31098, 48919, 50297, 67379, 97838, 100594, 134758, 146757, 150891, 202137, 274699, 293514, 301782, 404274, 549398, 824097, 1648194, 3571087, 7142174, 10713261, 21426522]

約数ペア:

[(1, 21426522), (2, 10713261), (3, 7142174), (6, 3571087), (13, 1648194), (26, 824097), (39, 549398), (53, 404274), (71, 301782), (73, 293514), (78, 274699), (106, 202137), (142, 150891), (146, 146757), (159, 134758), (213, 100594), (219, 97838), (318, 67379), (426, 50297), (438, 48919), (689, 31098), (923, 23214), (949, 22578), (1378, 15549), (1846, 11607), (1898, 11289), (2067, 10366), (2769, 7738), (2847, 7526), (3763, 5694), (3869, 5538), (4134, 5183)]