16878875

素因数分解:

$5^3\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1$

素因数の和:105

約数の個数: 48

約数和(自身を含む): 24665472

約数和(自身を除く): 7786597

約数列:

[1, 5, 13, 17, 25, 47, 65, 85, 125, 169, 221, 235, 325, 425, 611, 799, 845, 1105, 1175, 1625, 2125, 2873, 3055, 3995, 4225, 5525, 5875, 7943, 10387, 14365, 15275, 19975, 21125, 27625, 39715, 51935, 71825, 76375, 99875, 135031, 198575, 259675, 359125, 675155, 992875, 1298375, 3375775, 16878875]

約数ペア:

[(1, 16878875), (5, 3375775), (13, 1298375), (17, 992875), (25, 675155), (47, 359125), (65, 259675), (85, 198575), (125, 135031), (169, 99875), (221, 76375), (235, 71825), (325, 51935), (425, 39715), (611, 27625), (799, 21125), (845, 19975), (1105, 15275), (1175, 14365), (1625, 10387), (2125, 7943), (2873, 5875), (3055, 5525), (3995, 4225)]