20687056

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{367}}^1$

素因数の和:659

約数の個数: 40

約数和(自身を含む): 43441664

約数和(自身を除く): 22754608

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 271, 367, 542, 734, 1084, 1468, 2168, 2936, 3523, 4336, 4771, 5872, 7046, 9542, 14092, 19084, 28184, 38168, 56368, 76336, 99457, 198914, 397828, 795656, 1292941, 1591312, 2585882, 5171764, 10343528, 20687056]

約数ペア:

[(1, 20687056), (2, 10343528), (4, 5171764), (8, 2585882), (13, 1591312), (16, 1292941), (26, 795656), (52, 397828), (104, 198914), (208, 99457), (271, 76336), (367, 56368), (542, 38168), (734, 28184), (1084, 19084), (1468, 14092), (2168, 9542), (2936, 7046), (3523, 5872), (4336, 4771)]