28289275

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 43765056

約数和(自身を除く): 15475781

約数列:

[1, 5, 7, 17, 25, 35, 37, 85, 119, 175, 185, 257, 259, 425, 595, 629, 925, 1285, 1295, 1799, 2975, 3145, 4369, 4403, 6425, 6475, 8995, 9509, 15725, 21845, 22015, 30583, 44975, 47545, 66563, 109225, 110075, 152915, 161653, 237725, 332815, 764575, 808265, 1131571, 1664075, 4041325, 5657855, 28289275]

約数ペア:

[(1, 28289275), (5, 5657855), (7, 4041325), (17, 1664075), (25, 1131571), (35, 808265), (37, 764575), (85, 332815), (119, 237725), (175, 161653), (185, 152915), (257, 110075), (259, 109225), (425, 66563), (595, 47545), (629, 44975), (925, 30583), (1285, 22015), (1295, 21845), (1799, 15725), (2975, 9509), (3145, 8995), (4369, 6475), (4403, 6425)]