345520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{617}}^1$

素因数の和:637

約数の個数: 40

約数和(自身を含む): 919584

約数和(自身を除く): 574064

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 617, 1234, 2468, 3085, 4319, 4936, 6170, 8638, 9872, 12340, 17276, 21595, 24680, 34552, 43190, 49360, 69104, 86380, 172760, 345520]

約数ペア:

[(1, 345520), (2, 172760), (4, 86380), (5, 69104), (7, 49360), (8, 43190), (10, 34552), (14, 24680), (16, 21595), (20, 17276), (28, 12340), (35, 9872), (40, 8638), (56, 6170), (70, 4936), (80, 4319), (112, 3085), (140, 2468), (280, 1234), (560, 617)]