289256720

素因数分解:

$2^4\times 5^1\times {\mathrm{3615709}}^1$

素因数の和:3615722

約数の個数: 20

約数和(自身を含む): 672522060

約数和(自身を除く): 383265340

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3615709, 7231418, 14462836, 18078545, 28925672, 36157090, 57851344, 72314180, 144628360, 289256720]

約数ペア:

[(1, 289256720), (2, 144628360), (4, 72314180), (5, 57851344), (8, 36157090), (10, 28925672), (16, 18078545), (20, 14462836), (40, 7231418), (80, 3615709)]