20464575

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{97}}^2$

素因数の和:236

約数の個数: 36

約数和(自身を含む): 35366040

約数和(自身を除く): 14901465

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 97, 145, 291, 435, 485, 725, 1455, 2175, 2425, 2813, 7275, 8439, 9409, 14065, 28227, 42195, 47045, 70325, 141135, 210975, 235225, 272861, 705675, 818583, 1364305, 4092915, 6821525, 20464575]

約数ペア:

[(1, 20464575), (3, 6821525), (5, 4092915), (15, 1364305), (25, 818583), (29, 705675), (75, 272861), (87, 235225), (97, 210975), (145, 141135), (291, 70325), (435, 47045), (485, 42195), (725, 28227), (1455, 14065), (2175, 9409), (2425, 8439), (2813, 7275)]