20805720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13337}}^1$

素因数の和:13364

約数の個数: 64

約数和(自身を含む): 67223520

約数和(自身を除く): 46417800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13337, 26674, 40011, 53348, 66685, 80022, 106696, 133370, 160044, 173381, 200055, 266740, 320088, 346762, 400110, 520143, 533480, 693524, 800220, 866905, 1040286, 1387048, 1600440, 1733810, 2080572, 2600715, 3467620, 4161144, 5201430, 6935240, 10402860, 20805720]

約数ペア:

[(1, 20805720), (2, 10402860), (3, 6935240), (4, 5201430), (5, 4161144), (6, 3467620), (8, 2600715), (10, 2080572), (12, 1733810), (13, 1600440), (15, 1387048), (20, 1040286), (24, 866905), (26, 800220), (30, 693524), (39, 533480), (40, 520143), (52, 400110), (60, 346762), (65, 320088), (78, 266740), (104, 200055), (120, 173381), (130, 160044), (156, 133370), (195, 106696), (260, 80022), (312, 66685), (390, 53348), (520, 40011), (780, 26674), (1560, 13337)]