20745840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{86441}}^1$

素因数の和:86457

約数の個数: 40

約数和(自身を含む): 64312848

約数和(自身を除く): 43567008

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 86441, 172882, 259323, 345764, 432205, 518646, 691528, 864410, 1037292, 1296615, 1383056, 1728820, 2074584, 2593230, 3457640, 4149168, 5186460, 6915280, 10372920, 20745840]

約数ペア:

[(1, 20745840), (2, 10372920), (3, 6915280), (4, 5186460), (5, 4149168), (6, 3457640), (8, 2593230), (10, 2074584), (12, 1728820), (15, 1383056), (16, 1296615), (20, 1037292), (24, 864410), (30, 691528), (40, 518646), (48, 432205), (60, 345764), (80, 259323), (120, 172882), (240, 86441)]