256816100

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{42101}}^1$

素因数の和:42176

約数の個数: 36

約数和(自身を含む): 566440308

約数和(自身を除く): 309624208

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 122, 244, 305, 610, 1220, 1525, 3050, 6100, 42101, 84202, 168404, 210505, 421010, 842020, 1052525, 2105050, 2568161, 4210100, 5136322, 10272644, 12840805, 25681610, 51363220, 64204025, 128408050, 256816100]

約数ペア:

[(1, 256816100), (2, 128408050), (4, 64204025), (5, 51363220), (10, 25681610), (20, 12840805), (25, 10272644), (50, 5136322), (61, 4210100), (100, 2568161), (122, 2105050), (244, 1052525), (305, 842020), (610, 421010), (1220, 210505), (1525, 168404), (3050, 84202), (6100, 42101)]