18715180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{877}}^1$

素因数の和:994

約数の個数: 48

約数和(自身を含む): 43366176

約数和(自身を除く): 24650996

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 110, 194, 220, 388, 485, 877, 970, 1067, 1754, 1940, 2134, 3508, 4268, 4385, 5335, 8770, 9647, 10670, 17540, 19294, 21340, 38588, 48235, 85069, 96470, 170138, 192940, 340276, 425345, 850690, 935759, 1701380, 1871518, 3743036, 4678795, 9357590, 18715180]

約数ペア:

[(1, 18715180), (2, 9357590), (4, 4678795), (5, 3743036), (10, 1871518), (11, 1701380), (20, 935759), (22, 850690), (44, 425345), (55, 340276), (97, 192940), (110, 170138), (194, 96470), (220, 85069), (388, 48235), (485, 38588), (877, 21340), (970, 19294), (1067, 17540), (1754, 10670), (1940, 9647), (2134, 8770), (3508, 5335), (4268, 4385)]