205700540

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{1213}}^1$

素因数の和:1422

約数の個数: 48

約数和(自身を含む): 442575840

約数和(自身を除く): 236875300

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 139, 244, 278, 305, 556, 610, 695, 1213, 1220, 1390, 2426, 2780, 4852, 6065, 8479, 12130, 16958, 24260, 33916, 42395, 73993, 84790, 147986, 168607, 169580, 295972, 337214, 369965, 674428, 739930, 843035, 1479860, 1686070, 3372140, 10285027, 20570054, 41140108, 51425135, 102850270, 205700540]

約数ペア:

[(1, 205700540), (2, 102850270), (4, 51425135), (5, 41140108), (10, 20570054), (20, 10285027), (61, 3372140), (122, 1686070), (139, 1479860), (244, 843035), (278, 739930), (305, 674428), (556, 369965), (610, 337214), (695, 295972), (1213, 169580), (1220, 168607), (1390, 147986), (2426, 84790), (2780, 73993), (4852, 42395), (6065, 33916), (8479, 24260), (12130, 16958)]