28979769

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:230

約数の個数: 64

約数和(自身を含む): 51752960

約数和(自身を除く): 22773191

約数列:

[1, 3, 7, 13, 19, 21, 37, 39, 57, 91, 111, 133, 151, 247, 259, 273, 399, 453, 481, 703, 741, 777, 1057, 1443, 1729, 1963, 2109, 2869, 3171, 3367, 4921, 5187, 5587, 5889, 8607, 9139, 10101, 13741, 14763, 16761, 20083, 27417, 37297, 39109, 41223, 60249, 63973, 72631, 106153, 111891, 117327, 191919, 217893, 261079, 318459, 508417, 743071, 783237, 1379989, 1525251, 2229213, 4139967, 9659923, 28979769]

約数ペア:

[(1, 28979769), (3, 9659923), (7, 4139967), (13, 2229213), (19, 1525251), (21, 1379989), (37, 783237), (39, 743071), (57, 508417), (91, 318459), (111, 261079), (133, 217893), (151, 191919), (247, 117327), (259, 111891), (273, 106153), (399, 72631), (453, 63973), (481, 60249), (703, 41223), (741, 39109), (777, 37297), (1057, 27417), (1443, 20083), (1729, 16761), (1963, 14763), (2109, 13741), (2869, 10101), (3171, 9139), (3367, 8607), (4921, 5889), (5187, 5587)]