21990147250

素因数分解:

$2^1\times 5^3\times {\mathrm{5623}}^1\times {\mathrm{15643}}^1$

素因数の和:21283

約数の個数: 32

約数和(自身を含む): 41175508608

約数和(自身を除く): 19185361358

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 5623, 11246, 15643, 28115, 31286, 56230, 78215, 140575, 156430, 281150, 391075, 702875, 782150, 1405750, 1955375, 3910750, 87960589, 175921178, 439802945, 879605890, 2199014725, 4398029450, 10995073625, 21990147250]

約数ペア:

[(1, 21990147250), (2, 10995073625), (5, 4398029450), (10, 2199014725), (25, 879605890), (50, 439802945), (125, 175921178), (250, 87960589), (5623, 3910750), (11246, 1955375), (15643, 1405750), (28115, 782150), (31286, 702875), (56230, 391075), (78215, 281150), (140575, 156430)]