20399574

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{137}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 46738944

約数和(自身を除く): 26339370

約数列:

[1, 2, 3, 6, 13, 23, 26, 39, 46, 69, 78, 83, 137, 138, 166, 249, 274, 299, 411, 498, 598, 822, 897, 1079, 1781, 1794, 1909, 2158, 3151, 3237, 3562, 3818, 5343, 5727, 6302, 6474, 9453, 10686, 11371, 11454, 18906, 22742, 24817, 34113, 40963, 49634, 68226, 74451, 81926, 122889, 147823, 148902, 245778, 261533, 295646, 443469, 523066, 784599, 886938, 1569198, 3399929, 6799858, 10199787, 20399574]

約数ペア:

[(1, 20399574), (2, 10199787), (3, 6799858), (6, 3399929), (13, 1569198), (23, 886938), (26, 784599), (39, 523066), (46, 443469), (69, 295646), (78, 261533), (83, 245778), (137, 148902), (138, 147823), (166, 122889), (249, 81926), (274, 74451), (299, 68226), (411, 49634), (498, 40963), (598, 34113), (822, 24817), (897, 22742), (1079, 18906), (1781, 11454), (1794, 11371), (1909, 10686), (2158, 9453), (3151, 6474), (3237, 6302), (3562, 5727), (3818, 5343)]