28211235

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{727}}^1$

素因数の和:947

約数の個数: 32

約数和(自身を含む): 48921600

約数和(自身を除く): 20710365

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 199, 597, 727, 995, 2181, 2587, 2985, 3635, 7761, 9451, 10905, 12935, 28353, 38805, 47255, 141765, 144673, 434019, 723365, 1880749, 2170095, 5642247, 9403745, 28211235]

約数ペア:

[(1, 28211235), (3, 9403745), (5, 5642247), (13, 2170095), (15, 1880749), (39, 723365), (65, 434019), (195, 144673), (199, 141765), (597, 47255), (727, 38805), (995, 28353), (2181, 12935), (2587, 10905), (2985, 9451), (3635, 7761)]