28779725

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{5209}}^1$

素因数の和:5249

約数の個数: 24

約数和(自身を含む): 40700520

約数和(自身を除く): 11920795

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 1105, 5209, 5525, 26045, 67717, 88553, 130225, 338585, 442765, 1151189, 1692925, 2213825, 5755945, 28779725]

約数ペア:

[(1, 28779725), (5, 5755945), (13, 2213825), (17, 1692925), (25, 1151189), (65, 442765), (85, 338585), (221, 130225), (325, 88553), (425, 67717), (1105, 26045), (5209, 5525)]