28747420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{110567}}^1$

素因数の和:110589

約数の個数: 24

約数和(自身を含む): 65013984

約数和(自身を除く): 36266564

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 110567, 221134, 442268, 552835, 1105670, 1437371, 2211340, 2874742, 5749484, 7186855, 14373710, 28747420]

約数ペア:

[(1, 28747420), (2, 14373710), (4, 7186855), (5, 5749484), (10, 2874742), (13, 2211340), (20, 1437371), (26, 1105670), (52, 552835), (65, 442268), (130, 221134), (260, 110567)]