20186720

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1777}}^1$

素因数の和:1863

約数の個数: 48

約数和(自身を含む): 48390048

約数和(自身を除く): 28203328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 1777, 2272, 2840, 3554, 5680, 7108, 8885, 11360, 14216, 17770, 28432, 35540, 56864, 71080, 126167, 142160, 252334, 284320, 504668, 630835, 1009336, 1261670, 2018672, 2523340, 4037344, 5046680, 10093360, 20186720]

約数ペア:

[(1, 20186720), (2, 10093360), (4, 5046680), (5, 4037344), (8, 2523340), (10, 2018672), (16, 1261670), (20, 1009336), (32, 630835), (40, 504668), (71, 284320), (80, 252334), (142, 142160), (160, 126167), (284, 71080), (355, 56864), (568, 35540), (710, 28432), (1136, 17770), (1420, 14216), (1777, 11360), (2272, 8885), (2840, 7108), (3554, 5680)]