20210528

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2557}}^1$

素因数の和:2599

約数の個数: 48

約数和(自身を含む): 45123120

約数和(自身を除く): 24912592

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 416, 494, 608, 988, 1976, 2557, 3952, 5114, 7904, 10228, 20456, 33241, 40912, 48583, 66482, 81824, 97166, 132964, 194332, 265928, 388664, 531856, 631579, 777328, 1063712, 1263158, 1554656, 2526316, 5052632, 10105264, 20210528]

約数ペア:

[(1, 20210528), (2, 10105264), (4, 5052632), (8, 2526316), (13, 1554656), (16, 1263158), (19, 1063712), (26, 777328), (32, 631579), (38, 531856), (52, 388664), (76, 265928), (104, 194332), (152, 132964), (208, 97166), (247, 81824), (304, 66482), (416, 48583), (494, 40912), (608, 33241), (988, 20456), (1976, 10228), (2557, 7904), (3952, 5114)]