40000472020

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1\times {\mathrm{55987}}^1$

素因数の和:56392

約数の個数: 48

約数和(自身を含む): 84936035520

約数和(自身を除く): 44935563500

約数列:

[1, 2, 4, 5, 10, 20, 139, 257, 278, 514, 556, 695, 1028, 1285, 1390, 2570, 2780, 5140, 35723, 55987, 71446, 111974, 142892, 178615, 223948, 279935, 357230, 559870, 714460, 1119740, 7782193, 14388659, 15564386, 28777318, 31128772, 38910965, 57554636, 71943295, 77821930, 143886590, 155643860, 287773180, 2000023601, 4000047202, 8000094404, 10000118005, 20000236010, 40000472020]

約数ペア:

[(1, 40000472020), (2, 20000236010), (4, 10000118005), (5, 8000094404), (10, 4000047202), (20, 2000023601), (139, 287773180), (257, 155643860), (278, 143886590), (514, 77821930), (556, 71943295), (695, 57554636), (1028, 38910965), (1285, 31128772), (1390, 28777318), (2570, 15564386), (2780, 14388659), (5140, 7782193), (35723, 1119740), (55987, 714460), (71446, 559870), (111974, 357230), (142892, 279935), (178615, 223948)]