15950740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1979}}^1$

素因数の和:2032

約数の個数: 48

約数和(自身を含む): 37255680

約数和(自身を除く): 21304940

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 1979, 2015, 3958, 4030, 7916, 8060, 9895, 19790, 25727, 39580, 51454, 61349, 102908, 122698, 128635, 245396, 257270, 306745, 514540, 613490, 797537, 1226980, 1595074, 3190148, 3987685, 7975370, 15950740]

約数ペア:

[(1, 15950740), (2, 7975370), (4, 3987685), (5, 3190148), (10, 1595074), (13, 1226980), (20, 797537), (26, 613490), (31, 514540), (52, 306745), (62, 257270), (65, 245396), (124, 128635), (130, 122698), (155, 102908), (260, 61349), (310, 51454), (403, 39580), (620, 25727), (806, 19790), (1612, 9895), (1979, 8060), (2015, 7916), (3958, 4030)]