21658525

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5381}}^1$

素因数の和:5421

約数の個数: 24

約数和(自身を含む): 32033664

約数和(自身を除く): 10375139

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025, 5381, 26905, 37667, 123763, 134525, 188335, 618815, 866341, 941675, 3094075, 4331705, 21658525]

約数ペア:

[(1, 21658525), (5, 4331705), (7, 3094075), (23, 941675), (25, 866341), (35, 618815), (115, 188335), (161, 134525), (175, 123763), (575, 37667), (805, 26905), (4025, 5381)]