19993720

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9431}}^1$

素因数の和:9495

約数の個数: 32

約数和(自身を含む): 45839520

約数和(自身を除く): 25845800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9431, 18862, 37724, 47155, 75448, 94310, 188620, 377240, 499843, 999686, 1999372, 2499215, 3998744, 4998430, 9996860, 19993720]

約数ペア:

[(1, 19993720), (2, 9996860), (4, 4998430), (5, 3998744), (8, 2499215), (10, 1999372), (20, 999686), (40, 499843), (53, 377240), (106, 188620), (212, 94310), (265, 75448), (424, 47155), (530, 37724), (1060, 18862), (2120, 9431)]