19855420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76367}}^1$

素因数の和:76389

約数の個数: 24

約数和(自身を含む): 44904384

約数和(自身を除く): 25048964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76367, 152734, 305468, 381835, 763670, 992771, 1527340, 1985542, 3971084, 4963855, 9927710, 19855420]

約数ペア:

[(1, 19855420), (2, 9927710), (4, 4963855), (5, 3971084), (10, 1985542), (13, 1527340), (20, 992771), (26, 763670), (52, 381835), (65, 305468), (130, 152734), (260, 76367)]