28720926

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{251}}^1$

素因数の和:438

約数の個数: 64

約数和(自身を含む): 69431040

約数和(自身を除く): 40710114

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 117, 163, 234, 251, 326, 351, 489, 502, 702, 753, 978, 1467, 1506, 2119, 2259, 2934, 3263, 4238, 4401, 4518, 6357, 6526, 6777, 8802, 9789, 12714, 13554, 19071, 19578, 29367, 38142, 40913, 57213, 58734, 81826, 88101, 114426, 122739, 176202, 245478, 368217, 531869, 736434, 1063738, 1104651, 1595607, 2209302, 3191214, 4786821, 9573642, 14360463, 28720926]

約数ペア:

[(1, 28720926), (2, 14360463), (3, 9573642), (6, 4786821), (9, 3191214), (13, 2209302), (18, 1595607), (26, 1104651), (27, 1063738), (39, 736434), (54, 531869), (78, 368217), (117, 245478), (163, 176202), (234, 122739), (251, 114426), (326, 88101), (351, 81826), (489, 58734), (502, 57213), (702, 40913), (753, 38142), (978, 29367), (1467, 19578), (1506, 19071), (2119, 13554), (2259, 12714), (2934, 9789), (3263, 8802), (4238, 6777), (4401, 6526), (4518, 6357)]