291215020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{205081}}^1$

素因数の和:205161

約数の個数: 24

約数和(自身を含む): 620167968

約数和(自身を除く): 328952948

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 205081, 410162, 820324, 1025405, 2050810, 4101620, 14560751, 29121502, 58243004, 72803755, 145607510, 291215020]

約数ペア:

[(1, 291215020), (2, 145607510), (4, 72803755), (5, 58243004), (10, 29121502), (20, 14560751), (71, 4101620), (142, 2050810), (284, 1025405), (355, 820324), (710, 410162), (1420, 205081)]