21131974400

素因数分解:

$2^8\times 5^2\times {\mathrm{103}}^1\times {\mathrm{32057}}^1$

素因数の和:32186

約数の個数: 108

約数和(自身を含む): 52814400912

約数和(自身を除く): 31682426512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 103, 128, 160, 200, 206, 256, 320, 400, 412, 515, 640, 800, 824, 1030, 1280, 1600, 1648, 2060, 2575, 3200, 3296, 4120, 5150, 6400, 6592, 8240, 10300, 13184, 16480, 20600, 26368, 32057, 32960, 41200, 64114, 65920, 82400, 128228, 131840, 160285, 164800, 256456, 320570, 329600, 512912, 641140, 659200, 801425, 1025824, 1282280, 1602850, 2051648, 2564560, 3205700, 3301871, 4103296, 5129120, 6411400, 6603742, 8206592, 10258240, 12822800, 13207484, 16509355, 20516480, 25645600, 26414968, 33018710, 41032960, 51291200, 52829936, 66037420, 82546775, 102582400, 105659872, 132074840, 165093550, 205164800, 211319744, 264149680, 330187100, 422639488, 528299360, 660374200, 845278976, 1056598720, 1320748400, 2113197440, 2641496800, 4226394880, 5282993600, 10565987200, 21131974400]

約数ペア:

[(1, 21131974400), (2, 10565987200), (4, 5282993600), (5, 4226394880), (8, 2641496800), (10, 2113197440), (16, 1320748400), (20, 1056598720), (25, 845278976), (32, 660374200), (40, 528299360), (50, 422639488), (64, 330187100), (80, 264149680), (100, 211319744), (103, 205164800), (128, 165093550), (160, 132074840), (200, 105659872), (206, 102582400), (256, 82546775), (320, 66037420), (400, 52829936), (412, 51291200), (515, 41032960), (640, 33018710), (800, 26414968), (824, 25645600), (1030, 20516480), (1280, 16509355), (1600, 13207484), (1648, 12822800), (2060, 10258240), (2575, 8206592), (3200, 6603742), (3296, 6411400), (4120, 5129120), (5150, 4103296), (6400, 3301871), (6592, 3205700), (8240, 2564560), (10300, 2051648), (13184, 1602850), (16480, 1282280), (20600, 1025824), (26368, 801425), (32057, 659200), (32960, 641140), (41200, 512912), (64114, 329600), (65920, 320570), (82400, 256456), (128228, 164800), (131840, 160285)]