28578940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109919}}^1$

素因数の和:109941

約数の個数: 24

約数和(自身を含む): 64632960

約数和(自身を除く): 36054020

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 109919, 219838, 439676, 549595, 1099190, 1428947, 2198380, 2857894, 5715788, 7144735, 14289470, 28578940]

約数ペア:

[(1, 28578940), (2, 14289470), (4, 7144735), (5, 5715788), (10, 2857894), (13, 2198380), (20, 1428947), (26, 1099190), (52, 549595), (65, 439676), (130, 219838), (260, 109919)]