21965709

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1\times {\mathrm{1669}}^1$

素因数の和:1820

約数の個数: 16

約数和(自身を含む): 30300480

約数和(自身を除く): 8334771

約数列:

[1, 3, 41, 107, 123, 321, 1669, 4387, 5007, 13161, 68429, 178583, 205287, 535749, 7321903, 21965709]

約数ペア:

[(1, 21965709), (3, 7321903), (41, 535749), (107, 205287), (123, 178583), (321, 68429), (1669, 13161), (4387, 5007)]