21960620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{577}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 50688288

約数和(自身を除く): 28727668

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 173, 220, 346, 577, 692, 865, 1154, 1730, 1903, 2308, 2885, 3460, 3806, 5770, 6347, 7612, 9515, 11540, 12694, 19030, 25388, 31735, 38060, 63470, 99821, 126940, 199642, 399284, 499105, 998210, 1098031, 1996420, 2196062, 4392124, 5490155, 10980310, 21960620]

約数ペア:

[(1, 21960620), (2, 10980310), (4, 5490155), (5, 4392124), (10, 2196062), (11, 1996420), (20, 1098031), (22, 998210), (44, 499105), (55, 399284), (110, 199642), (173, 126940), (220, 99821), (346, 63470), (577, 38060), (692, 31735), (865, 25388), (1154, 19030), (1730, 12694), (1903, 11540), (2308, 9515), (2885, 7612), (3460, 6347), (3806, 5770)]