21320425

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5297}}^1$

素因数の和:5337

約数の個数: 24

約数和(自身を含む): 31533696

約数和(自身を除く): 10213271

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025, 5297, 26485, 37079, 121831, 132425, 185395, 609155, 852817, 926975, 3045775, 4264085, 21320425]

約数ペア:

[(1, 21320425), (5, 4264085), (7, 3045775), (23, 926975), (25, 852817), (35, 609155), (115, 185395), (161, 132425), (175, 121831), (575, 37079), (805, 26485), (4025, 5297)]