19717578

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{491}}^1$

素因数の和:619

約数の個数: 48

約数和(自身を含む): 45130176

約数和(自身を除く): 25412598

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 69, 97, 138, 194, 207, 291, 414, 491, 582, 873, 982, 1473, 1746, 2231, 2946, 4419, 4462, 6693, 8838, 11293, 13386, 20079, 22586, 33879, 40158, 47627, 67758, 95254, 101637, 142881, 203274, 285762, 428643, 857286, 1095421, 2190842, 3286263, 6572526, 9858789, 19717578]

約数ペア:

[(1, 19717578), (2, 9858789), (3, 6572526), (6, 3286263), (9, 2190842), (18, 1095421), (23, 857286), (46, 428643), (69, 285762), (97, 203274), (138, 142881), (194, 101637), (207, 95254), (291, 67758), (414, 47627), (491, 40158), (582, 33879), (873, 22586), (982, 20079), (1473, 13386), (1746, 11293), (2231, 8838), (2946, 6693), (4419, 4462)]