19856718

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{131}}^1\times {\mathrm{401}}^1$

素因数の和:550

約数の個数: 64

約数和(自身を含む): 50941440

約数和(自身を除く): 31084722

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 131, 189, 262, 378, 393, 401, 786, 802, 917, 1179, 1203, 1834, 2358, 2406, 2751, 2807, 3537, 3609, 5502, 5614, 7074, 7218, 8253, 8421, 10827, 16506, 16842, 21654, 24759, 25263, 49518, 50526, 52531, 75789, 105062, 151578, 157593, 315186, 367717, 472779, 735434, 945558, 1103151, 1418337, 2206302, 2836674, 3309453, 6618906, 9928359, 19856718]

約数ペア:

[(1, 19856718), (2, 9928359), (3, 6618906), (6, 3309453), (7, 2836674), (9, 2206302), (14, 1418337), (18, 1103151), (21, 945558), (27, 735434), (42, 472779), (54, 367717), (63, 315186), (126, 157593), (131, 151578), (189, 105062), (262, 75789), (378, 52531), (393, 50526), (401, 49518), (786, 25263), (802, 24759), (917, 21654), (1179, 16842), (1203, 16506), (1834, 10827), (2358, 8421), (2406, 8253), (2751, 7218), (2807, 7074), (3537, 5614), (3609, 5502)]