77620520

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{19213}}^1$

素因数の和:19325

約数の個数: 32

約数和(自身を含む): 176384520

約数和(自身を除く): 98764000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 19213, 38426, 76852, 96065, 153704, 192130, 384260, 768520, 1940513, 3881026, 7762052, 9702565, 15524104, 19405130, 38810260, 77620520]

約数ペア:

[(1, 77620520), (2, 38810260), (4, 19405130), (5, 15524104), (8, 9702565), (10, 7762052), (20, 3881026), (40, 1940513), (101, 768520), (202, 384260), (404, 192130), (505, 153704), (808, 96065), (1010, 76852), (2020, 38426), (4040, 19213)]