26781320

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1637}}^1$

素因数の和:2057

約数の個数: 32

約数和(自身を含む): 60442200

約数和(自身を除く): 33660880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 1637, 2045, 3272, 3274, 4090, 6548, 8180, 8185, 13096, 16360, 16370, 32740, 65480, 669533, 1339066, 2678132, 3347665, 5356264, 6695330, 13390660, 26781320]

約数ペア:

[(1, 26781320), (2, 13390660), (4, 6695330), (5, 5356264), (8, 3347665), (10, 2678132), (20, 1339066), (40, 669533), (409, 65480), (818, 32740), (1636, 16370), (1637, 16360), (2045, 13096), (3272, 8185), (3274, 8180), (4090, 6548)]