20712560

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23537}}^1$

素因数の和:23561

約数の個数: 40

約数和(自身を含む): 52536816

約数和(自身を除く): 31824256

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23537, 47074, 94148, 117685, 188296, 235370, 258907, 376592, 470740, 517814, 941480, 1035628, 1294535, 1882960, 2071256, 2589070, 4142512, 5178140, 10356280, 20712560]

約数ペア:

[(1, 20712560), (2, 10356280), (4, 5178140), (5, 4142512), (8, 2589070), (10, 2071256), (11, 1882960), (16, 1294535), (20, 1035628), (22, 941480), (40, 517814), (44, 470740), (55, 376592), (80, 258907), (88, 235370), (110, 188296), (176, 117685), (220, 94148), (440, 47074), (880, 23537)]