21660648

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:342

約数の個数: 64

約数和(自身を含む): 56179200

約数和(自身を除く): 34518552

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 129, 139, 151, 172, 258, 278, 302, 344, 417, 453, 516, 556, 604, 834, 906, 1032, 1112, 1208, 1668, 1812, 3336, 3624, 5977, 6493, 11954, 12986, 17931, 19479, 20989, 23908, 25972, 35862, 38958, 41978, 47816, 51944, 62967, 71724, 77916, 83956, 125934, 143448, 155832, 167912, 251868, 503736, 902527, 1805054, 2707581, 3610108, 5415162, 7220216, 10830324, 21660648]

約数ペア:

[(1, 21660648), (2, 10830324), (3, 7220216), (4, 5415162), (6, 3610108), (8, 2707581), (12, 1805054), (24, 902527), (43, 503736), (86, 251868), (129, 167912), (139, 155832), (151, 143448), (172, 125934), (258, 83956), (278, 77916), (302, 71724), (344, 62967), (417, 51944), (453, 47816), (516, 41978), (556, 38958), (604, 35862), (834, 25972), (906, 23908), (1032, 20989), (1112, 19479), (1208, 17931), (1668, 12986), (1812, 11954), (3336, 6493), (3624, 5977)]