20681796

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{269}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 49896000

約数和(自身を除く): 29214204

約数列:

[1, 2, 3, 4, 6, 12, 43, 86, 129, 149, 172, 258, 269, 298, 447, 516, 538, 596, 807, 894, 1076, 1614, 1788, 3228, 6407, 11567, 12814, 19221, 23134, 25628, 34701, 38442, 40081, 46268, 69402, 76884, 80162, 120243, 138804, 160324, 240486, 480972, 1723483, 3446966, 5170449, 6893932, 10340898, 20681796]

約数ペア:

[(1, 20681796), (2, 10340898), (3, 6893932), (4, 5170449), (6, 3446966), (12, 1723483), (43, 480972), (86, 240486), (129, 160324), (149, 138804), (172, 120243), (258, 80162), (269, 76884), (298, 69402), (447, 46268), (516, 40081), (538, 38442), (596, 34701), (807, 25628), (894, 23134), (1076, 19221), (1614, 12814), (1788, 11567), (3228, 6407)]