21788199

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{1571}}^1$

素因数の和:1667

約数の個数: 24

約数和(自身を含む): 33351552

約数和(自身を除く): 11563353

約数列:

[1, 3, 9, 23, 67, 69, 201, 207, 603, 1541, 1571, 4623, 4713, 13869, 14139, 36133, 105257, 108399, 315771, 325197, 947313, 2420911, 7262733, 21788199]

約数ペア:

[(1, 21788199), (3, 7262733), (9, 2420911), (23, 947313), (67, 325197), (69, 315771), (201, 108399), (207, 105257), (603, 36133), (1541, 14139), (1571, 13869), (4623, 4713)]