21348425

素因数分解:

$5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2837}}^1$

素因数の和:2897

約数の個数: 24

約数和(自身を含む): 30968256

約数和(自身を除く): 9619831

約数列:

[1, 5, 7, 25, 35, 43, 175, 215, 301, 1075, 1505, 2837, 7525, 14185, 19859, 70925, 99295, 121991, 496475, 609955, 853937, 3049775, 4269685, 21348425]

約数ペア:

[(1, 21348425), (5, 4269685), (7, 3049775), (25, 853937), (35, 609955), (43, 496475), (175, 121991), (215, 99295), (301, 70925), (1075, 19859), (1505, 14185), (2837, 7525)]