21000604816

素因数分解:

$2^4\times {\mathrm{331}}^1\times {\mathrm{3965371}}^1$

素因数の和:3965710

約数の個数: 20

約数和(自身を含む): 40811608624

約数和(自身を除く): 19811003808

約数列:

[1, 2, 4, 8, 16, 331, 662, 1324, 2648, 5296, 3965371, 7930742, 15861484, 31722968, 63445936, 1312537801, 2625075602, 5250151204, 10500302408, 21000604816]

約数ペア:

[(1, 21000604816), (2, 10500302408), (4, 5250151204), (8, 2625075602), (16, 1312537801), (331, 63445936), (662, 31722968), (1324, 15861484), (2648, 7930742), (5296, 3965371)]