20782245

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:306

約数の個数: 64

約数和(自身を含む): 39813120

約数和(自身を除く): 19030875

約数列:

[1, 3, 5, 11, 15, 17, 31, 33, 51, 55, 85, 93, 155, 165, 187, 239, 255, 341, 465, 527, 561, 717, 935, 1023, 1195, 1581, 1705, 2629, 2635, 2805, 3585, 4063, 5115, 5797, 7409, 7887, 7905, 12189, 13145, 17391, 20315, 22227, 28985, 37045, 39435, 44693, 60945, 81499, 86955, 111135, 125953, 134079, 223465, 244497, 377859, 407495, 629765, 670395, 1222485, 1385483, 1889295, 4156449, 6927415, 20782245]

約数ペア:

[(1, 20782245), (3, 6927415), (5, 4156449), (11, 1889295), (15, 1385483), (17, 1222485), (31, 670395), (33, 629765), (51, 407495), (55, 377859), (85, 244497), (93, 223465), (155, 134079), (165, 125953), (187, 111135), (239, 86955), (255, 81499), (341, 60945), (465, 44693), (527, 39435), (561, 37045), (717, 28985), (935, 22227), (1023, 20315), (1195, 17391), (1581, 13145), (1705, 12189), (2629, 7905), (2635, 7887), (2805, 7409), (3585, 5797), (4063, 5115)]