172040720

素因数分解:

$2^4\times 5^1\times {\mathrm{2150509}}^1$

素因数の和:2150522

約数の個数: 20

約数和(自身を含む): 399994860

約数和(自身を除く): 227954140

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2150509, 4301018, 8602036, 10752545, 17204072, 21505090, 34408144, 43010180, 86020360, 172040720]

約数ペア:

[(1, 172040720), (2, 86020360), (4, 43010180), (5, 34408144), (8, 21505090), (10, 17204072), (16, 10752545), (20, 8602036), (40, 4301018), (80, 2150509)]