20761775

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{401}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 27416400

約数和(自身を除く): 6654625

約数列:

[1, 5, 19, 25, 95, 109, 401, 475, 545, 2005, 2071, 2725, 7619, 10025, 10355, 38095, 43709, 51775, 190475, 218545, 830471, 1092725, 4152355, 20761775]

約数ペア:

[(1, 20761775), (5, 4152355), (19, 1092725), (25, 830471), (95, 218545), (109, 190475), (401, 51775), (475, 43709), (545, 38095), (2005, 10355), (2071, 10025), (2725, 7619)]