20427992

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2207}}^1$

素因数の和:2315

約数の個数: 32

約数和(自身を含む): 41731200

約数和(自身を除く): 21303208

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2207, 2314, 4414, 4628, 8828, 9256, 17656, 28691, 57382, 114764, 196423, 229528, 392846, 785692, 1571384, 2553499, 5106998, 10213996, 20427992]

約数ペア:

[(1, 20427992), (2, 10213996), (4, 5106998), (8, 2553499), (13, 1571384), (26, 785692), (52, 392846), (89, 229528), (104, 196423), (178, 114764), (356, 57382), (712, 28691), (1157, 17656), (2207, 9256), (2314, 8828), (4414, 4628)]