21193398

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2057

約数の個数: 48

約数和(自身を含む): 49920000

約数和(自身を除く): 28726602

約数列:

[1, 2, 3, 6, 9, 18, 19, 31, 38, 57, 62, 93, 114, 171, 186, 279, 342, 558, 589, 1178, 1767, 1999, 3534, 3998, 5301, 5997, 10602, 11994, 17991, 35982, 37981, 61969, 75962, 113943, 123938, 185907, 227886, 341829, 371814, 557721, 683658, 1115442, 1177411, 2354822, 3532233, 7064466, 10596699, 21193398]

約数ペア:

[(1, 21193398), (2, 10596699), (3, 7064466), (6, 3532233), (9, 2354822), (18, 1177411), (19, 1115442), (31, 683658), (38, 557721), (57, 371814), (62, 341829), (93, 227886), (114, 185907), (171, 123938), (186, 113943), (279, 75962), (342, 61969), (558, 37981), (589, 35982), (1178, 17991), (1767, 11994), (1999, 10602), (3534, 5997), (3998, 5301)]