20790224

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:268

約数の個数: 80

約数和(自身を含む): 50413440

約数和(自身を除く): 29623216

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 109, 112, 131, 182, 208, 218, 262, 364, 436, 524, 728, 763, 872, 917, 1048, 1417, 1456, 1526, 1703, 1744, 1834, 2096, 2834, 3052, 3406, 3668, 5668, 6104, 6812, 7336, 9919, 11336, 11921, 12208, 13624, 14279, 14672, 19838, 22672, 23842, 27248, 28558, 39676, 47684, 57116, 79352, 95368, 99953, 114232, 158704, 185627, 190736, 199906, 228464, 371254, 399812, 742508, 799624, 1299389, 1485016, 1599248, 2598778, 2970032, 5197556, 10395112, 20790224]

約数ペア:

[(1, 20790224), (2, 10395112), (4, 5197556), (7, 2970032), (8, 2598778), (13, 1599248), (14, 1485016), (16, 1299389), (26, 799624), (28, 742508), (52, 399812), (56, 371254), (91, 228464), (104, 199906), (109, 190736), (112, 185627), (131, 158704), (182, 114232), (208, 99953), (218, 95368), (262, 79352), (364, 57116), (436, 47684), (524, 39676), (728, 28558), (763, 27248), (872, 23842), (917, 22672), (1048, 19838), (1417, 14672), (1456, 14279), (1526, 13624), (1703, 12208), (1744, 11921), (1834, 11336), (2096, 9919), (2834, 7336), (3052, 6812), (3406, 6104), (3668, 5668)]