3997665

素因数分解:

$3^2\times 5^1\times 7^4\times {\mathrm{37}}^1$

素因数の和:76

約数の個数: 60

約数和(自身を含む): 8302164

約数和(自身を除く): 4304499

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 37, 45, 49, 63, 105, 111, 147, 185, 245, 259, 315, 333, 343, 441, 555, 735, 777, 1029, 1295, 1665, 1715, 1813, 2205, 2331, 2401, 3087, 3885, 5145, 5439, 7203, 9065, 11655, 12005, 12691, 15435, 16317, 21609, 27195, 36015, 38073, 63455, 81585, 88837, 108045, 114219, 190365, 266511, 444185, 571095, 799533, 1332555, 3997665]

約数ペア:

[(1, 3997665), (3, 1332555), (5, 799533), (7, 571095), (9, 444185), (15, 266511), (21, 190365), (35, 114219), (37, 108045), (45, 88837), (49, 81585), (63, 63455), (105, 38073), (111, 36015), (147, 27195), (185, 21609), (245, 16317), (259, 15435), (315, 12691), (333, 12005), (343, 11655), (441, 9065), (555, 7203), (735, 5439), (777, 5145), (1029, 3885), (1295, 3087), (1665, 2401), (1715, 2331), (1813, 2205)]