256419075

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:477

約数の個数: 96

約数和(自身を含む): 501396480

約数和(自身を除く): 244977405

約数列:

[1, 3, 5, 11, 15, 17, 25, 33, 47, 51, 55, 75, 85, 141, 165, 187, 235, 255, 275, 389, 425, 517, 561, 705, 799, 825, 935, 1167, 1175, 1275, 1551, 1945, 2397, 2585, 2805, 3525, 3995, 4279, 4675, 5835, 6613, 7755, 8789, 9725, 11985, 12837, 12925, 14025, 18283, 19839, 19975, 21395, 26367, 29175, 33065, 38775, 43945, 54849, 59925, 64185, 72743, 91415, 99195, 106975, 131835, 165325, 201113, 218229, 219725, 274245, 310811, 320925, 363715, 457075, 495975, 603339, 659175, 932433, 1005565, 1091145, 1371225, 1554055, 1818575, 3016695, 3418921, 4662165, 5027825, 5455725, 7770275, 10256763, 15083475, 17094605, 23310825, 51283815, 85473025, 256419075]

約数ペア:

[(1, 256419075), (3, 85473025), (5, 51283815), (11, 23310825), (15, 17094605), (17, 15083475), (25, 10256763), (33, 7770275), (47, 5455725), (51, 5027825), (55, 4662165), (75, 3418921), (85, 3016695), (141, 1818575), (165, 1554055), (187, 1371225), (235, 1091145), (255, 1005565), (275, 932433), (389, 659175), (425, 603339), (517, 495975), (561, 457075), (705, 363715), (799, 320925), (825, 310811), (935, 274245), (1167, 219725), (1175, 218229), (1275, 201113), (1551, 165325), (1945, 131835), (2397, 106975), (2585, 99195), (2805, 91415), (3525, 72743), (3995, 64185), (4279, 59925), (4675, 54849), (5835, 43945), (6613, 38775), (7755, 33065), (8789, 29175), (9725, 26367), (11985, 21395), (12837, 19975), (12925, 19839), (14025, 18283)]