19644280

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6917}}^1$

素因数の和:6999

約数の個数: 32

約数和(自身を含む): 44828640

約数和(自身を除く): 25184360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 6917, 13834, 27668, 34585, 55336, 69170, 138340, 276680, 491107, 982214, 1964428, 2455535, 3928856, 4911070, 9822140, 19644280]

約数ペア:

[(1, 19644280), (2, 9822140), (4, 4911070), (5, 3928856), (8, 2455535), (10, 1964428), (20, 982214), (40, 491107), (71, 276680), (142, 138340), (284, 69170), (355, 55336), (568, 34585), (710, 27668), (1420, 13834), (2840, 6917)]