20172596675

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:538

約数の個数: 144

約数和(自身を含む): 32931225600

約数和(自身を除く): 12758628925

約数列:

[1, 5, 7, 11, 25, 31, 35, 55, 77, 79, 121, 155, 175, 217, 275, 341, 385, 389, 395, 553, 605, 775, 847, 869, 1085, 1705, 1925, 1945, 1975, 2387, 2449, 2723, 2765, 3025, 3751, 4235, 4279, 4345, 5425, 6083, 8525, 9559, 9725, 11935, 12059, 12245, 13615, 13825, 17143, 18755, 21175, 21395, 21725, 26257, 26939, 29953, 30415, 30731, 47069, 47795, 59675, 60295, 61225, 66913, 68075, 84413, 85715, 93775, 106975, 131285, 132649, 134695, 149765, 152075, 153655, 188573, 215117, 235345, 238975, 296329, 301475, 329483, 334565, 338041, 422065, 428575, 656425, 663245, 673475, 748825, 768275, 928543, 942865, 952661, 1075585, 1176725, 1459139, 1481645, 1647415, 1672825, 1690205, 2074303, 2110325, 2366287, 3316225, 3718451, 4642715, 4714325, 4763305, 5377925, 6668627, 7295695, 7408225, 8237075, 8451025, 10213973, 10371515, 10479271, 11831435, 18592255, 23213575, 23816525, 26029157, 33343135, 36478475, 51069865, 51857575, 52396355, 59157175, 73354897, 92961275, 115271981, 130145785, 166715675, 255349325, 261981775, 366774485, 576359905, 650728925, 806903867, 1833872425, 2881799525, 4034519335, 20172596675]

約数ペア:

[(1, 20172596675), (5, 4034519335), (7, 2881799525), (11, 1833872425), (25, 806903867), (31, 650728925), (35, 576359905), (55, 366774485), (77, 261981775), (79, 255349325), (121, 166715675), (155, 130145785), (175, 115271981), (217, 92961275), (275, 73354897), (341, 59157175), (385, 52396355), (389, 51857575), (395, 51069865), (553, 36478475), (605, 33343135), (775, 26029157), (847, 23816525), (869, 23213575), (1085, 18592255), (1705, 11831435), (1925, 10479271), (1945, 10371515), (1975, 10213973), (2387, 8451025), (2449, 8237075), (2723, 7408225), (2765, 7295695), (3025, 6668627), (3751, 5377925), (4235, 4763305), (4279, 4714325), (4345, 4642715), (5425, 3718451), (6083, 3316225), (8525, 2366287), (9559, 2110325), (9725, 2074303), (11935, 1690205), (12059, 1672825), (12245, 1647415), (13615, 1481645), (13825, 1459139), (17143, 1176725), (18755, 1075585), (21175, 952661), (21395, 942865), (21725, 928543), (26257, 768275), (26939, 748825), (29953, 673475), (30415, 663245), (30731, 656425), (47069, 428575), (47795, 422065), (59675, 338041), (60295, 334565), (61225, 329483), (66913, 301475), (68075, 296329), (84413, 238975), (85715, 235345), (93775, 215117), (106975, 188573), (131285, 153655), (132649, 152075), (134695, 149765)]