21000979304

素因数分解:

$2^3\times {\mathrm{73}}^1\times {\mathrm{35960581}}^1$

素因数の和:35960660

約数の個数: 16

約数和(自身を含む): 39916246020

約数和(自身を除く): 18915266716

約数列:

[1, 2, 4, 8, 73, 146, 292, 584, 35960581, 71921162, 143842324, 287684648, 2625122413, 5250244826, 10500489652, 21000979304]

約数ペア:

[(1, 21000979304), (2, 10500489652), (4, 5250244826), (8, 2625122413), (73, 287684648), (146, 143842324), (292, 71921162), (584, 35960581)]