21404474

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{317}}^1$

素因数の和:399

約数の個数: 48

約数和(自身を含む): 41109768

約数和(自身を除く): 19705294

約数列:

[1, 2, 7, 13, 14, 26, 49, 53, 91, 98, 106, 182, 317, 371, 634, 637, 689, 742, 1274, 1378, 2219, 2597, 4121, 4438, 4823, 5194, 8242, 9646, 15533, 16801, 28847, 31066, 33602, 33761, 57694, 67522, 117607, 201929, 218413, 235214, 403858, 436826, 823249, 1528891, 1646498, 3057782, 10702237, 21404474]

約数ペア:

[(1, 21404474), (2, 10702237), (7, 3057782), (13, 1646498), (14, 1528891), (26, 823249), (49, 436826), (53, 403858), (91, 235214), (98, 218413), (106, 201929), (182, 117607), (317, 67522), (371, 57694), (634, 33761), (637, 33602), (689, 31066), (742, 28847), (1274, 16801), (1378, 15533), (2219, 9646), (2597, 8242), (4121, 5194), (4438, 4823)]