217885923

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{20639}}^1$

素因数の和:20688

約数の個数: 32

約数和(自身を含む): 356659200

約数和(自身を除く): 138773277

約数列:

[1, 3, 9, 17, 23, 27, 51, 69, 153, 207, 391, 459, 621, 1173, 3519, 10557, 20639, 61917, 185751, 350863, 474697, 557253, 1052589, 1424091, 3157767, 4272273, 8069849, 9473301, 12816819, 24209547, 72628641, 217885923]

約数ペア:

[(1, 217885923), (3, 72628641), (9, 24209547), (17, 12816819), (23, 9473301), (27, 8069849), (51, 4272273), (69, 3157767), (153, 1424091), (207, 1052589), (391, 557253), (459, 474697), (621, 350863), (1173, 185751), (3519, 61917), (10557, 20639)]