21421143

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{569}}^1$

素因数の和:711

約数の個数: 24

約数和(自身を含む): 32011200

約数和(自身を除く): 10590057

約数列:

[1, 3, 9, 47, 89, 141, 267, 423, 569, 801, 1707, 4183, 5121, 12549, 26743, 37647, 50641, 80229, 151923, 240687, 455769, 2380127, 7140381, 21421143]

約数ペア:

[(1, 21421143), (3, 7140381), (9, 2380127), (47, 455769), (89, 240687), (141, 151923), (267, 80229), (423, 50641), (569, 37647), (801, 26743), (1707, 12549), (4183, 5121)]