20078420

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{631}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 44381568

約数和(自身を除く): 24303148

約数列:

[1, 2, 4, 5, 10, 20, 37, 43, 74, 86, 148, 172, 185, 215, 370, 430, 631, 740, 860, 1262, 1591, 2524, 3155, 3182, 6310, 6364, 7955, 12620, 15910, 23347, 27133, 31820, 46694, 54266, 93388, 108532, 116735, 135665, 233470, 271330, 466940, 542660, 1003921, 2007842, 4015684, 5019605, 10039210, 20078420]

約数ペア:

[(1, 20078420), (2, 10039210), (4, 5019605), (5, 4015684), (10, 2007842), (20, 1003921), (37, 542660), (43, 466940), (74, 271330), (86, 233470), (148, 135665), (172, 116735), (185, 108532), (215, 93388), (370, 54266), (430, 46694), (631, 31820), (740, 27133), (860, 23347), (1262, 15910), (1591, 12620), (2524, 7955), (3155, 6364), (3182, 6310)]