18725140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1021}}^1$

素因数の和:1168

約数の個数: 48

約数和(自身を含む): 45327744

約数和(自身を除く): 26602604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1021, 1310, 1834, 2042, 2620, 3668, 4084, 4585, 5105, 7147, 9170, 10210, 14294, 18340, 20420, 28588, 35735, 71470, 133751, 142940, 267502, 535004, 668755, 936257, 1337510, 1872514, 2675020, 3745028, 4681285, 9362570, 18725140]

約数ペア:

[(1, 18725140), (2, 9362570), (4, 4681285), (5, 3745028), (7, 2675020), (10, 1872514), (14, 1337510), (20, 936257), (28, 668755), (35, 535004), (70, 267502), (131, 142940), (140, 133751), (262, 71470), (524, 35735), (655, 28588), (917, 20420), (1021, 18340), (1310, 14294), (1834, 10210), (2042, 9170), (2620, 7147), (3668, 5105), (4084, 4585)]