20017960

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{2593}}^1$

素因数の和:2797

約数の個数: 32

約数和(自身を含む): 45291240

約数和(自身を除く): 25273280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 2593, 3860, 5186, 7720, 10372, 12965, 20744, 25930, 51860, 103720, 500449, 1000898, 2001796, 2502245, 4003592, 5004490, 10008980, 20017960]

約数ペア:

[(1, 20017960), (2, 10008980), (4, 5004490), (5, 4003592), (8, 2502245), (10, 2001796), (20, 1000898), (40, 500449), (193, 103720), (386, 51860), (772, 25930), (965, 20744), (1544, 12965), (1930, 10372), (2593, 7720), (3860, 5186)]