20858660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1979}}^1$

素因数の和:2036

約数の個数: 48

約数和(自身を含む): 47900160

約数和(自身を除く): 27041500

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 124, 155, 170, 310, 340, 527, 620, 1054, 1979, 2108, 2635, 3958, 5270, 7916, 9895, 10540, 19790, 33643, 39580, 61349, 67286, 122698, 134572, 168215, 245396, 306745, 336430, 613490, 672860, 1042933, 1226980, 2085866, 4171732, 5214665, 10429330, 20858660]

約数ペア:

[(1, 20858660), (2, 10429330), (4, 5214665), (5, 4171732), (10, 2085866), (17, 1226980), (20, 1042933), (31, 672860), (34, 613490), (62, 336430), (68, 306745), (85, 245396), (124, 168215), (155, 134572), (170, 122698), (310, 67286), (340, 61349), (527, 39580), (620, 33643), (1054, 19790), (1979, 10540), (2108, 9895), (2635, 7916), (3958, 5270)]