20091177640

素因数分解:

$2^3\times 5^1\times {\mathrm{32027}}^1\times {\mathrm{15683}}^1$

素因数の和:47721

約数の個数: 32

約数和(自身を含む): 45209443680

約数和(自身を除く): 25118266040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 15683, 31366, 32027, 62732, 64054, 78415, 125464, 128108, 156830, 160135, 256216, 313660, 320270, 627320, 640540, 1281080, 502279441, 1004558882, 2009117764, 2511397205, 4018235528, 5022794410, 10045588820, 20091177640]

約数ペア:

[(1, 20091177640), (2, 10045588820), (4, 5022794410), (5, 4018235528), (8, 2511397205), (10, 2009117764), (20, 1004558882), (40, 502279441), (15683, 1281080), (31366, 640540), (32027, 627320), (62732, 320270), (64054, 313660), (78415, 256216), (125464, 160135), (128108, 156830)]