20512275

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{439}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 39283200

約数和(自身を除く): 18770925

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 89, 105, 175, 267, 439, 445, 525, 623, 1317, 1335, 1869, 2195, 2225, 3073, 3115, 6585, 6675, 9219, 9345, 10975, 15365, 15575, 32925, 39071, 46095, 46725, 76825, 117213, 195355, 230475, 273497, 586065, 820491, 976775, 1367485, 2930325, 4102455, 6837425, 20512275]

約数ペア:

[(1, 20512275), (3, 6837425), (5, 4102455), (7, 2930325), (15, 1367485), (21, 976775), (25, 820491), (35, 586065), (75, 273497), (89, 230475), (105, 195355), (175, 117213), (267, 76825), (439, 46725), (445, 46095), (525, 39071), (623, 32925), (1317, 15575), (1335, 15365), (1869, 10975), (2195, 9345), (2225, 9219), (3073, 6675), (3115, 6585)]