28711930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{220861}}^1$

素因数の和:220881

約数の個数: 16

約数和(自身を含む): 55657224

約数和(自身を除く): 26945294

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 220861, 441722, 1104305, 2208610, 2871193, 5742386, 14355965, 28711930]

約数ペア:

[(1, 28711930), (2, 14355965), (5, 5742386), (10, 2871193), (13, 2208610), (26, 1104305), (65, 441722), (130, 220861)]