399990200

素因数分解:

$2^3\times 5^2\times {\mathrm{103}}^1\times {\mathrm{19417}}^1$

素因数の和:19536

約数の個数: 48

約数和(自身を含む): 939054480

約数和(自身を除く): 539064280

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 103, 200, 206, 412, 515, 824, 1030, 2060, 2575, 4120, 5150, 10300, 19417, 20600, 38834, 77668, 97085, 155336, 194170, 388340, 485425, 776680, 970850, 1941700, 1999951, 3883400, 3999902, 7999804, 9999755, 15999608, 19999510, 39999020, 49998775, 79998040, 99997550, 199995100, 399990200]

約数ペア:

[(1, 399990200), (2, 199995100), (4, 99997550), (5, 79998040), (8, 49998775), (10, 39999020), (20, 19999510), (25, 15999608), (40, 9999755), (50, 7999804), (100, 3999902), (103, 3883400), (200, 1999951), (206, 1941700), (412, 970850), (515, 776680), (824, 485425), (1030, 388340), (2060, 194170), (2575, 155336), (4120, 97085), (5150, 77668), (10300, 38834), (19417, 20600)]