20514405

素因数分解:

$3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 34219008

約数和(自身を除く): 13704603

約数列:

[1, 3, 5, 15, 31, 93, 155, 157, 281, 465, 471, 785, 843, 1405, 2355, 4215, 4867, 8711, 14601, 24335, 26133, 43555, 44117, 73005, 130665, 132351, 220585, 661755, 1367627, 4102881, 6838135, 20514405]

約数ペア:

[(1, 20514405), (3, 6838135), (5, 4102881), (15, 1367627), (31, 661755), (93, 220585), (155, 132351), (157, 130665), (281, 73005), (465, 44117), (471, 43555), (785, 26133), (843, 24335), (1405, 14601), (2355, 8711), (4215, 4867)]