215519980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{828923}}^1$

素因数の和:828945

約数の個数: 24

約数和(自身を含む): 487407312

約数和(自身を除く): 271887332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 828923, 1657846, 3315692, 4144615, 8289230, 10775999, 16578460, 21551998, 43103996, 53879995, 107759990, 215519980]

約数ペア:

[(1, 215519980), (2, 107759990), (4, 53879995), (5, 43103996), (10, 21551998), (13, 16578460), (20, 10775999), (26, 8289230), (52, 4144615), (65, 3315692), (130, 1657846), (260, 828923)]