21018582

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{379}}^1$

素因数の和:482

約数の個数: 64

約数和(自身を含む): 51072000

約数和(自身を除く): 30053418

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 79, 117, 158, 234, 237, 351, 379, 474, 702, 711, 758, 1027, 1137, 1422, 2054, 2133, 2274, 3081, 3411, 4266, 4927, 6162, 6822, 9243, 9854, 10233, 14781, 18486, 20466, 27729, 29562, 29941, 44343, 55458, 59882, 88686, 89823, 133029, 179646, 266058, 269469, 389233, 538938, 778466, 808407, 1167699, 1616814, 2335398, 3503097, 7006194, 10509291, 21018582]

約数ペア:

[(1, 21018582), (2, 10509291), (3, 7006194), (6, 3503097), (9, 2335398), (13, 1616814), (18, 1167699), (26, 808407), (27, 778466), (39, 538938), (54, 389233), (78, 269469), (79, 266058), (117, 179646), (158, 133029), (234, 89823), (237, 88686), (351, 59882), (379, 55458), (474, 44343), (702, 29941), (711, 29562), (758, 27729), (1027, 20466), (1137, 18486), (1422, 14781), (2054, 10233), (2133, 9854), (2274, 9243), (3081, 6822), (3411, 6162), (4266, 4927)]