21496578064

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{40801}}^1$

素因数の和:40988

約数の個数: 80

約数和(自身を含む): 47811783600

約数和(自身を除く): 26315205536

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 104, 136, 149, 208, 221, 272, 298, 442, 596, 884, 1192, 1768, 1937, 2384, 2533, 3536, 3874, 5066, 7748, 10132, 15496, 20264, 30992, 32929, 40528, 40801, 65858, 81602, 131716, 163204, 263432, 326408, 526864, 530413, 652816, 693617, 1060826, 1387234, 2121652, 2774468, 4243304, 5548936, 6079349, 8486608, 9017021, 11097872, 12158698, 18034042, 24317396, 36068084, 48634792, 72136168, 79031537, 97269584, 103348933, 144272336, 158063074, 206697866, 316126148, 413395732, 632252296, 826791464, 1264504592, 1343536129, 1653582928, 2687072258, 5374144516, 10748289032, 21496578064]

約数ペア:

[(1, 21496578064), (2, 10748289032), (4, 5374144516), (8, 2687072258), (13, 1653582928), (16, 1343536129), (17, 1264504592), (26, 826791464), (34, 632252296), (52, 413395732), (68, 316126148), (104, 206697866), (136, 158063074), (149, 144272336), (208, 103348933), (221, 97269584), (272, 79031537), (298, 72136168), (442, 48634792), (596, 36068084), (884, 24317396), (1192, 18034042), (1768, 12158698), (1937, 11097872), (2384, 9017021), (2533, 8486608), (3536, 6079349), (3874, 5548936), (5066, 4243304), (7748, 2774468), (10132, 2121652), (15496, 1387234), (20264, 1060826), (30992, 693617), (32929, 652816), (40528, 530413), (40801, 526864), (65858, 326408), (81602, 263432), (131716, 163204)]