20687120

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11243}}^1$

素因数の和:11279

約数の個数: 40

約数和(自身を含む): 50193216

約数和(自身を除く): 29506096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11243, 22486, 44972, 56215, 89944, 112430, 179888, 224860, 258589, 449720, 517178, 899440, 1034356, 1292945, 2068712, 2585890, 4137424, 5171780, 10343560, 20687120]

約数ペア:

[(1, 20687120), (2, 10343560), (4, 5171780), (5, 4137424), (8, 2585890), (10, 2068712), (16, 1292945), (20, 1034356), (23, 899440), (40, 517178), (46, 449720), (80, 258589), (92, 224860), (115, 179888), (184, 112430), (230, 89944), (368, 56215), (460, 44972), (920, 22486), (1840, 11243)]