39989800

素因数分解:

$2^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2531}}^1$

素因数の和:2626

約数の個数: 48

約数和(自身を含む): 94190400

約数和(自身を除く): 54200600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 158, 200, 316, 395, 632, 790, 1580, 1975, 2531, 3160, 3950, 5062, 7900, 10124, 12655, 15800, 20248, 25310, 50620, 63275, 101240, 126550, 199949, 253100, 399898, 506200, 799796, 999745, 1599592, 1999490, 3998980, 4998725, 7997960, 9997450, 19994900, 39989800]

約数ペア:

[(1, 39989800), (2, 19994900), (4, 9997450), (5, 7997960), (8, 4998725), (10, 3998980), (20, 1999490), (25, 1599592), (40, 999745), (50, 799796), (79, 506200), (100, 399898), (158, 253100), (200, 199949), (316, 126550), (395, 101240), (632, 63275), (790, 50620), (1580, 25310), (1975, 20248), (2531, 15800), (3160, 12655), (3950, 10124), (5062, 7900)]