21324425

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{439}}^1$

素因数の和:545

約数の個数: 24

約数和(自身を含む): 27825600

約数和(自身を除く): 6501175

約数列:

[1, 5, 25, 29, 67, 145, 335, 439, 725, 1675, 1943, 2195, 9715, 10975, 12731, 29413, 48575, 63655, 147065, 318275, 735325, 852977, 4264885, 21324425]

約数ペア:

[(1, 21324425), (5, 4264885), (25, 852977), (29, 735325), (67, 318275), (145, 147065), (335, 63655), (439, 48575), (725, 29413), (1675, 12731), (1943, 10975), (2195, 9715)]