20390600

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2371}}^1$

素因数の和:2430

約数の個数: 48

約数和(自身を含む): 48531120

約数和(自身を除く): 28140520

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 172, 200, 215, 344, 430, 860, 1075, 1720, 2150, 2371, 4300, 4742, 8600, 9484, 11855, 18968, 23710, 47420, 59275, 94840, 101953, 118550, 203906, 237100, 407812, 474200, 509765, 815624, 1019530, 2039060, 2548825, 4078120, 5097650, 10195300, 20390600]

約数ペア:

[(1, 20390600), (2, 10195300), (4, 5097650), (5, 4078120), (8, 2548825), (10, 2039060), (20, 1019530), (25, 815624), (40, 509765), (43, 474200), (50, 407812), (86, 237100), (100, 203906), (172, 118550), (200, 101953), (215, 94840), (344, 59275), (430, 47420), (860, 23710), (1075, 18968), (1720, 11855), (2150, 9484), (2371, 8600), (4300, 4742)]