21702455

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{653}}^1$

素因数の和:715

約数の個数: 24

約数和(自身を含む): 28912032

約数和(自身を除く): 7209577

約数列:

[1, 5, 17, 23, 85, 115, 289, 391, 653, 1445, 1955, 3265, 6647, 11101, 15019, 33235, 55505, 75095, 188717, 255323, 943585, 1276615, 4340491, 21702455]

約数ペア:

[(1, 21702455), (5, 4340491), (17, 1276615), (23, 943585), (85, 255323), (115, 188717), (289, 75095), (391, 55505), (653, 33235), (1445, 15019), (1955, 11101), (3265, 6647)]