138220520

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{34213}}^1$

素因数の和:34325

約数の個数: 32

約数和(自身を含む): 314084520

約数和(自身を除く): 175864000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 34213, 68426, 136852, 171065, 273704, 342130, 684260, 1368520, 3455513, 6911026, 13822052, 17277565, 27644104, 34555130, 69110260, 138220520]

約数ペア:

[(1, 138220520), (2, 69110260), (4, 34555130), (5, 27644104), (8, 17277565), (10, 13822052), (20, 6911026), (40, 3455513), (101, 1368520), (202, 684260), (404, 342130), (505, 273704), (808, 171065), (1010, 136852), (2020, 68426), (4040, 34213)]