81019984

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{220163}}^1$

素因数の和:220194

約数の個数: 20

約数和(自身を含む): 163802016

約数和(自身を除く): 82782032

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 220163, 440326, 880652, 1761304, 3522608, 5063749, 10127498, 20254996, 40509992, 81019984]

約数ペア:

[(1, 81019984), (2, 40509992), (4, 20254996), (8, 10127498), (16, 5063749), (23, 3522608), (46, 1761304), (92, 880652), (184, 440326), (368, 220163)]