205125520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{134951}}^1$

素因数の和:134983

約数の個数: 40

約数和(自身を含む): 502021440

約数和(自身を除く): 296895920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 134951, 269902, 539804, 674755, 1079608, 1349510, 2159216, 2564069, 2699020, 5128138, 5398040, 10256276, 10796080, 12820345, 20512552, 25640690, 41025104, 51281380, 102562760, 205125520]

約数ペア:

[(1, 205125520), (2, 102562760), (4, 51281380), (5, 41025104), (8, 25640690), (10, 20512552), (16, 12820345), (19, 10796080), (20, 10256276), (38, 5398040), (40, 5128138), (76, 2699020), (80, 2564069), (95, 2159216), (152, 1349510), (190, 1079608), (304, 674755), (380, 539804), (760, 269902), (1520, 134951)]