28421710

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{421}}^1$

素因数の和:628

約数の個数: 32

約数和(自身を含む): 52807392

約数和(自身を除く): 24385682

約数列:

[1, 2, 5, 10, 43, 86, 157, 215, 314, 421, 430, 785, 842, 1570, 2105, 4210, 6751, 13502, 18103, 33755, 36206, 66097, 67510, 90515, 132194, 181030, 330485, 660970, 2842171, 5684342, 14210855, 28421710]

約数ペア:

[(1, 28421710), (2, 14210855), (5, 5684342), (10, 2842171), (43, 660970), (86, 330485), (157, 181030), (215, 132194), (314, 90515), (421, 67510), (430, 66097), (785, 36206), (842, 33755), (1570, 18103), (2105, 13502), (4210, 6751)]