128971381

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{223}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 174666240

約数和(自身を除く): 45694859

約数列:

[1, 7, 11, 29, 37, 49, 77, 203, 223, 259, 319, 407, 539, 1073, 1421, 1561, 1813, 2233, 2453, 2849, 6467, 7511, 8251, 10927, 11803, 15631, 17171, 19943, 45269, 52577, 57757, 71137, 82621, 90761, 120197, 239279, 316883, 404299, 497959, 578347, 635327, 1674953, 2632069, 3485713, 4447289, 11724671, 18424483, 128971381]

約数ペア:

[(1, 128971381), (7, 18424483), (11, 11724671), (29, 4447289), (37, 3485713), (49, 2632069), (77, 1674953), (203, 635327), (223, 578347), (259, 497959), (319, 404299), (407, 316883), (539, 239279), (1073, 120197), (1421, 90761), (1561, 82621), (1813, 71137), (2233, 57757), (2453, 52577), (2849, 45269), (6467, 19943), (7511, 17171), (8251, 15631), (10927, 11803)]