20969494

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^2\times {\mathrm{137}}^1$

素因数の和:217

約数の個数: 48

約数和(自身を含む): 40386528

約数和(自身を除く): 19417034

約数列:

[1, 2, 7, 13, 14, 26, 29, 58, 91, 137, 182, 203, 274, 377, 406, 754, 841, 959, 1682, 1781, 1918, 2639, 3562, 3973, 5278, 5887, 7946, 10933, 11774, 12467, 21866, 24934, 27811, 51649, 55622, 76531, 103298, 115217, 153062, 230434, 361543, 723086, 806519, 1497821, 1613038, 2995642, 10484747, 20969494]

約数ペア:

[(1, 20969494), (2, 10484747), (7, 2995642), (13, 1613038), (14, 1497821), (26, 806519), (29, 723086), (58, 361543), (91, 230434), (137, 153062), (182, 115217), (203, 103298), (274, 76531), (377, 55622), (406, 51649), (754, 27811), (841, 24934), (959, 21866), (1682, 12467), (1781, 11774), (1918, 10933), (2639, 7946), (3562, 5887), (3973, 5278)]