20919546

素因数分解:

$2^1\times 3^4\times {\mathrm{263}}^1\times {\mathrm{491}}^1$

素因数の和:768

約数の個数: 40

約数和(自身を含む): 47149344

約数和(自身を除く): 26229798

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 263, 491, 526, 789, 982, 1473, 1578, 2367, 2946, 4419, 4734, 7101, 8838, 13257, 14202, 21303, 26514, 39771, 42606, 79542, 129133, 258266, 387399, 774798, 1162197, 2324394, 3486591, 6973182, 10459773, 20919546]

約数ペア:

[(1, 20919546), (2, 10459773), (3, 6973182), (6, 3486591), (9, 2324394), (18, 1162197), (27, 774798), (54, 387399), (81, 258266), (162, 129133), (263, 79542), (491, 42606), (526, 39771), (789, 26514), (982, 21303), (1473, 14202), (1578, 13257), (2367, 8838), (2946, 7101), (4419, 4734)]