20504240

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{3511}}^1$

素因数の和:3597

約数の個数: 40

約数和(自身を含む): 48339168

約数和(自身を除く): 27834928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 3511, 5840, 7022, 14044, 17555, 28088, 35110, 56176, 70220, 140440, 256303, 280880, 512606, 1025212, 1281515, 2050424, 2563030, 4100848, 5126060, 10252120, 20504240]

約数ペア:

[(1, 20504240), (2, 10252120), (4, 5126060), (5, 4100848), (8, 2563030), (10, 2050424), (16, 1281515), (20, 1025212), (40, 512606), (73, 280880), (80, 256303), (146, 140440), (292, 70220), (365, 56176), (584, 35110), (730, 28088), (1168, 17555), (1460, 14044), (2920, 7022), (3511, 5840)]