28717185

素因数分解:

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

素因数の和:550

約数の個数: 48

約数和(自身を含む): 54172800

約数和(自身を除く): 25455615

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 89, 105, 147, 245, 267, 439, 445, 623, 735, 1317, 1335, 1869, 2195, 3073, 3115, 4361, 6585, 9219, 9345, 13083, 15365, 21511, 21805, 39071, 46095, 64533, 65415, 107555, 117213, 195355, 273497, 322665, 586065, 820491, 1367485, 1914479, 4102455, 5743437, 9572395, 28717185]

約数ペア:

[(1, 28717185), (3, 9572395), (5, 5743437), (7, 4102455), (15, 1914479), (21, 1367485), (35, 820491), (49, 586065), (89, 322665), (105, 273497), (147, 195355), (245, 117213), (267, 107555), (439, 65415), (445, 64533), (623, 46095), (735, 39071), (1317, 21805), (1335, 21511), (1869, 15365), (2195, 13083), (3073, 9345), (3115, 9219), (4361, 6585)]