28270840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54367}}^1$

素因数の和:54391

約数の個数: 32

約数和(自身を含む): 68503680

約数和(自身を除く): 40232840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 54367, 108734, 217468, 271835, 434936, 543670, 706771, 1087340, 1413542, 2174680, 2827084, 3533855, 5654168, 7067710, 14135420, 28270840]

約数ペア:

[(1, 28270840), (2, 14135420), (4, 7067710), (5, 5654168), (8, 3533855), (10, 2827084), (13, 2174680), (20, 1413542), (26, 1087340), (40, 706771), (52, 543670), (65, 434936), (104, 271835), (130, 217468), (260, 108734), (520, 54367)]