19764950

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{317}}^1$

素因数の和:401

約数の個数: 48

約数和(自身を含む): 39037680

約数和(自身を除く): 19272730

約数列:

[1, 2, 5, 10, 25, 29, 43, 50, 58, 86, 145, 215, 290, 317, 430, 634, 725, 1075, 1247, 1450, 1585, 2150, 2494, 3170, 6235, 7925, 9193, 12470, 13631, 15850, 18386, 27262, 31175, 45965, 62350, 68155, 91930, 136310, 229825, 340775, 395299, 459650, 681550, 790598, 1976495, 3952990, 9882475, 19764950]

約数ペア:

[(1, 19764950), (2, 9882475), (5, 3952990), (10, 1976495), (25, 790598), (29, 681550), (43, 459650), (50, 395299), (58, 340775), (86, 229825), (145, 136310), (215, 91930), (290, 68155), (317, 62350), (430, 45965), (634, 31175), (725, 27262), (1075, 18386), (1247, 15850), (1450, 13631), (1585, 12470), (2150, 9193), (2494, 7925), (3170, 6235)]