20153847175

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{2543}}^1$

素因数の和:2773

約数の個数: 96

約数和(自身を含む): 32706478080

約数和(自身を除く): 12552630905

約数列:

[1, 5, 7, 11, 23, 25, 35, 55, 77, 115, 161, 175, 179, 253, 275, 385, 575, 805, 895, 1253, 1265, 1771, 1925, 1969, 2543, 4025, 4117, 4475, 6265, 6325, 8855, 9845, 12715, 13783, 17801, 20585, 27973, 28819, 31325, 44275, 45287, 49225, 58489, 63575, 68915, 89005, 102925, 139865, 144095, 195811, 226435, 292445, 317009, 344575, 409423, 445025, 455197, 643379, 699325, 720475, 979055, 1132175, 1462225, 1585045, 2047115, 2275985, 3186379, 3216895, 4503653, 4895275, 5007167, 7925225, 10235575, 10469531, 11379925, 15931895, 16084475, 22518265, 25035835, 35050169, 52347655, 73286717, 79659475, 112591325, 115164841, 125179175, 175250845, 261738275, 366433585, 575824205, 806153887, 876254225, 1832167925, 2879121025, 4030769435, 20153847175]

約数ペア:

[(1, 20153847175), (5, 4030769435), (7, 2879121025), (11, 1832167925), (23, 876254225), (25, 806153887), (35, 575824205), (55, 366433585), (77, 261738275), (115, 175250845), (161, 125179175), (175, 115164841), (179, 112591325), (253, 79659475), (275, 73286717), (385, 52347655), (575, 35050169), (805, 25035835), (895, 22518265), (1253, 16084475), (1265, 15931895), (1771, 11379925), (1925, 10469531), (1969, 10235575), (2543, 7925225), (4025, 5007167), (4117, 4895275), (4475, 4503653), (6265, 3216895), (6325, 3186379), (8855, 2275985), (9845, 2047115), (12715, 1585045), (13783, 1462225), (17801, 1132175), (20585, 979055), (27973, 720475), (28819, 699325), (31325, 643379), (44275, 455197), (45287, 445025), (49225, 409423), (58489, 344575), (63575, 317009), (68915, 292445), (89005, 226435), (102925, 195811), (139865, 144095)]