19885554

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^2\times {\mathrm{2179}}^1$

素因数の和:2216

約数の個数: 48

約数和(自身を含む): 47872800

約数和(自身を除く): 27987246

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 78, 117, 169, 234, 338, 351, 507, 702, 1014, 1521, 2179, 3042, 4358, 4563, 6537, 9126, 13074, 19611, 28327, 39222, 56654, 58833, 84981, 117666, 169962, 254943, 368251, 509886, 736502, 764829, 1104753, 1529658, 2209506, 3314259, 6628518, 9942777, 19885554]

約数ペア:

[(1, 19885554), (2, 9942777), (3, 6628518), (6, 3314259), (9, 2209506), (13, 1529658), (18, 1104753), (26, 764829), (27, 736502), (39, 509886), (54, 368251), (78, 254943), (117, 169962), (169, 117666), (234, 84981), (338, 58833), (351, 56654), (507, 39222), (702, 28327), (1014, 19611), (1521, 13074), (2179, 9126), (3042, 6537), (4358, 4563)]