21131860

素因数分解:

$2^2\times 5^1\times {\mathrm{367}}^1\times {\mathrm{2879}}^1$

素因数の和:3255

約数の個数: 24

約数和(自身を含む): 44513280

約数和(自身を除く): 23381420

約数列:

[1, 2, 4, 5, 10, 20, 367, 734, 1468, 1835, 2879, 3670, 5758, 7340, 11516, 14395, 28790, 57580, 1056593, 2113186, 4226372, 5282965, 10565930, 21131860]

約数ペア:

[(1, 21131860), (2, 10565930), (4, 5282965), (5, 4226372), (10, 2113186), (20, 1056593), (367, 57580), (734, 28790), (1468, 14395), (1835, 11516), (2879, 7340), (3670, 5758)]