31901480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1979}}^1$

素因数の和:2034

約数の個数: 64

約数和(自身を含む): 79833600

約数和(自身を除く): 47932120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1612, 1979, 2015, 3224, 3958, 4030, 7916, 8060, 9895, 15832, 16120, 19790, 25727, 39580, 51454, 61349, 79160, 102908, 122698, 128635, 205816, 245396, 257270, 306745, 490792, 514540, 613490, 797537, 1029080, 1226980, 1595074, 2453960, 3190148, 3987685, 6380296, 7975370, 15950740, 31901480]

約数ペア:

[(1, 31901480), (2, 15950740), (4, 7975370), (5, 6380296), (8, 3987685), (10, 3190148), (13, 2453960), (20, 1595074), (26, 1226980), (31, 1029080), (40, 797537), (52, 613490), (62, 514540), (65, 490792), (104, 306745), (124, 257270), (130, 245396), (155, 205816), (248, 128635), (260, 122698), (310, 102908), (403, 79160), (520, 61349), (620, 51454), (806, 39580), (1240, 25727), (1612, 19790), (1979, 16120), (2015, 15832), (3224, 9895), (3958, 8060), (4030, 7916)]