20807312911

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1$

素因数の和:485

約数の個数: 96

約数和(自身を含む): 28668245760

約数和(自身を除く): 7860932849

約数列:

[1, 7, 11, 17, 49, 77, 83, 109, 119, 187, 251, 539, 581, 763, 833, 913, 1199, 1309, 1411, 1757, 1853, 2761, 4067, 4267, 5341, 6391, 8393, 9047, 9163, 9877, 12299, 12971, 15521, 19327, 20383, 20833, 27359, 29869, 44737, 46937, 58751, 63329, 69139, 90797, 99517, 108647, 135289, 142681, 145831, 153799, 191513, 209083, 229163, 300949, 328559, 354161, 443303, 465103, 696619, 760529, 998767, 1020817, 1076593, 1340591, 1604141, 1691789, 2106643, 2270797, 2299913, 2479127, 3255721, 3895771, 4876333, 5116133, 7536151, 11228987, 11842523, 14746501, 15895579, 17353889, 22790047, 24978767, 27270397, 35812931, 38603549, 82897661, 111269053, 174851369, 190892779, 250690517, 270224843, 424639039, 1223959583, 1891573901, 2972473273, 20807312911]

約数ペア:

[(1, 20807312911), (7, 2972473273), (11, 1891573901), (17, 1223959583), (49, 424639039), (77, 270224843), (83, 250690517), (109, 190892779), (119, 174851369), (187, 111269053), (251, 82897661), (539, 38603549), (581, 35812931), (763, 27270397), (833, 24978767), (913, 22790047), (1199, 17353889), (1309, 15895579), (1411, 14746501), (1757, 11842523), (1853, 11228987), (2761, 7536151), (4067, 5116133), (4267, 4876333), (5341, 3895771), (6391, 3255721), (8393, 2479127), (9047, 2299913), (9163, 2270797), (9877, 2106643), (12299, 1691789), (12971, 1604141), (15521, 1340591), (19327, 1076593), (20383, 1020817), (20833, 998767), (27359, 760529), (29869, 696619), (44737, 465103), (46937, 443303), (58751, 354161), (63329, 328559), (69139, 300949), (90797, 229163), (99517, 209083), (108647, 191513), (135289, 153799), (142681, 145831)]