28025475

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{277}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 49639680

約数和(自身を除く): 21614205

約数列:

[1, 3, 5, 15, 19, 25, 57, 71, 75, 95, 213, 277, 285, 355, 475, 831, 1065, 1349, 1385, 1425, 1775, 4047, 4155, 5263, 5325, 6745, 6925, 15789, 19667, 20235, 20775, 26315, 33725, 59001, 78945, 98335, 101175, 131575, 295005, 373673, 394725, 491675, 1121019, 1475025, 1868365, 5605095, 9341825, 28025475]

約数ペア:

[(1, 28025475), (3, 9341825), (5, 5605095), (15, 1868365), (19, 1475025), (25, 1121019), (57, 491675), (71, 394725), (75, 373673), (95, 295005), (213, 131575), (277, 101175), (285, 98335), (355, 78945), (475, 59001), (831, 33725), (1065, 26315), (1349, 20775), (1385, 20235), (1425, 19667), (1775, 15789), (4047, 6925), (4155, 6745), (5263, 5325)]