17521985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 24367392

約数和(自身を除く): 6845407

約数列:

[1, 5, 13, 17, 65, 85, 101, 157, 221, 505, 785, 1105, 1313, 1717, 2041, 2669, 6565, 8585, 10205, 13345, 15857, 22321, 34697, 79285, 111605, 173485, 206141, 269569, 1030705, 1347845, 3504397, 17521985]

約数ペア:

[(1, 17521985), (5, 3504397), (13, 1347845), (17, 1030705), (65, 269569), (85, 206141), (101, 173485), (157, 111605), (221, 79285), (505, 34697), (785, 22321), (1105, 15857), (1313, 13345), (1717, 10205), (2041, 8585), (2669, 6565)]