21064953

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 35903616

約数和(自身を除く): 14838663

約数列:

[1, 3, 7, 13, 21, 39, 49, 73, 91, 147, 151, 219, 273, 453, 511, 637, 949, 1057, 1533, 1911, 1963, 2847, 3171, 3577, 5889, 6643, 7399, 10731, 11023, 13741, 19929, 22197, 33069, 41223, 46501, 77161, 96187, 139503, 143299, 231483, 288561, 429897, 540127, 1003093, 1620381, 3009279, 7021651, 21064953]

約数ペア:

[(1, 21064953), (3, 7021651), (7, 3009279), (13, 1620381), (21, 1003093), (39, 540127), (49, 429897), (73, 288561), (91, 231483), (147, 143299), (151, 139503), (219, 96187), (273, 77161), (453, 46501), (511, 41223), (637, 33069), (949, 22197), (1057, 19929), (1533, 13741), (1911, 11023), (1963, 10731), (2847, 7399), (3171, 6643), (3577, 5889)]