311571975

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1$

素因数の和:206

約数の個数: 144

約数和(自身を含む): 646486400

約数和(自身を除く): 334914425

約数列:

[1, 3, 5, 11, 13, 15, 19, 25, 33, 39, 55, 57, 65, 75, 95, 121, 139, 143, 165, 195, 209, 247, 275, 285, 325, 363, 417, 429, 475, 605, 627, 695, 715, 741, 825, 975, 1045, 1235, 1425, 1529, 1573, 1807, 1815, 2085, 2145, 2299, 2641, 2717, 3025, 3135, 3475, 3575, 3705, 4587, 4719, 5225, 5421, 6175, 6897, 7645, 7865, 7923, 8151, 9035, 9075, 10425, 10725, 11495, 13205, 13585, 15675, 16819, 18525, 19877, 22935, 23595, 27105, 29051, 29887, 34333, 34485, 38225, 39325, 39615, 40755, 45175, 50457, 57475, 59631, 66025, 67925, 84095, 87153, 89661, 99385, 102999, 114675, 117975, 135525, 145255, 149435, 171665, 172425, 198075, 203775, 218647, 252285, 298155, 319561, 377663, 420475, 435765, 448305, 496925, 514995, 655941, 726275, 747175, 858325, 958683, 1093235, 1132989, 1261425, 1490775, 1597805, 1888315, 2178825, 2241525, 2574975, 3279705, 4154293, 4793415, 5466175, 5664945, 7989025, 9441575, 12462879, 16398525, 20771465, 23967075, 28324725, 62314395, 103857325, 311571975]

約数ペア:

[(1, 311571975), (3, 103857325), (5, 62314395), (11, 28324725), (13, 23967075), (15, 20771465), (19, 16398525), (25, 12462879), (33, 9441575), (39, 7989025), (55, 5664945), (57, 5466175), (65, 4793415), (75, 4154293), (95, 3279705), (121, 2574975), (139, 2241525), (143, 2178825), (165, 1888315), (195, 1597805), (209, 1490775), (247, 1261425), (275, 1132989), (285, 1093235), (325, 958683), (363, 858325), (417, 747175), (429, 726275), (475, 655941), (605, 514995), (627, 496925), (695, 448305), (715, 435765), (741, 420475), (825, 377663), (975, 319561), (1045, 298155), (1235, 252285), (1425, 218647), (1529, 203775), (1573, 198075), (1807, 172425), (1815, 171665), (2085, 149435), (2145, 145255), (2299, 135525), (2641, 117975), (2717, 114675), (3025, 102999), (3135, 99385), (3475, 89661), (3575, 87153), (3705, 84095), (4587, 67925), (4719, 66025), (5225, 59631), (5421, 57475), (6175, 50457), (6897, 45175), (7645, 40755), (7865, 39615), (7923, 39325), (8151, 38225), (9035, 34485), (9075, 34333), (10425, 29887), (10725, 29051), (11495, 27105), (13205, 23595), (13585, 22935), (15675, 19877), (16819, 18525)]