20037140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1013}}^1$

素因数の和:1088

約数の個数: 48

約数和(自身を含む): 44972928

約数和(自身を除く): 24935788

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 860, 989, 1013, 1978, 2026, 3956, 4052, 4945, 5065, 9890, 10130, 19780, 20260, 23299, 43559, 46598, 87118, 93196, 116495, 174236, 217795, 232990, 435590, 465980, 871180, 1001857, 2003714, 4007428, 5009285, 10018570, 20037140]

約数ペア:

[(1, 20037140), (2, 10018570), (4, 5009285), (5, 4007428), (10, 2003714), (20, 1001857), (23, 871180), (43, 465980), (46, 435590), (86, 232990), (92, 217795), (115, 174236), (172, 116495), (215, 93196), (230, 87118), (430, 46598), (460, 43559), (860, 23299), (989, 20260), (1013, 19780), (1978, 10130), (2026, 9890), (3956, 5065), (4052, 4945)]