19687720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37861}}^1$

素因数の和:37885

約数の個数: 32

約数和(自身を含む): 47706120

約数和(自身を除く): 28018400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 37861, 75722, 151444, 189305, 302888, 378610, 492193, 757220, 984386, 1514440, 1968772, 2460965, 3937544, 4921930, 9843860, 19687720]

約数ペア:

[(1, 19687720), (2, 9843860), (4, 4921930), (5, 3937544), (8, 2460965), (10, 1968772), (13, 1514440), (20, 984386), (26, 757220), (40, 492193), (52, 378610), (65, 302888), (104, 189305), (130, 151444), (260, 75722), (520, 37861)]