278510020

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{42071}}^1$

素因数の和:42411

約数の個数: 24

約数和(自身を含む): 586651968

約数和(自身を除く): 308141948

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 3310, 6620, 42071, 84142, 168284, 210355, 420710, 841420, 13925501, 27851002, 55702004, 69627505, 139255010, 278510020]

約数ペア:

[(1, 278510020), (2, 139255010), (4, 69627505), (5, 55702004), (10, 27851002), (20, 13925501), (331, 841420), (662, 420710), (1324, 210355), (1655, 168284), (3310, 84142), (6620, 42071)]