1780254

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:285

約数の個数: 48

約数和(自身を含む): 4492800

約数和(自身を除く): 2712546

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 71, 126, 142, 199, 213, 398, 426, 497, 597, 639, 994, 1194, 1278, 1393, 1491, 1791, 2786, 2982, 3582, 4179, 4473, 8358, 8946, 12537, 14129, 25074, 28258, 42387, 84774, 98903, 127161, 197806, 254322, 296709, 593418, 890127, 1780254]

約数ペア:

[(1, 1780254), (2, 890127), (3, 593418), (6, 296709), (7, 254322), (9, 197806), (14, 127161), (18, 98903), (21, 84774), (42, 42387), (63, 28258), (71, 25074), (126, 14129), (142, 12537), (199, 8946), (213, 8358), (398, 4473), (426, 4179), (497, 3582), (597, 2982), (639, 2786), (994, 1791), (1194, 1491), (1278, 1393)]