21436120

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{3209}}^1$

素因数の和:3387

約数の個数: 32

約数和(自身を含む): 48535200

約数和(自身を除く): 27099080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 3209, 3340, 6418, 6680, 12836, 16045, 25672, 32090, 64180, 128360, 535903, 1071806, 2143612, 2679515, 4287224, 5359030, 10718060, 21436120]

約数ペア:

[(1, 21436120), (2, 10718060), (4, 5359030), (5, 4287224), (8, 2679515), (10, 2143612), (20, 1071806), (40, 535903), (167, 128360), (334, 64180), (668, 32090), (835, 25672), (1336, 16045), (1670, 12836), (3209, 6680), (3340, 6418)]