278329380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{662689}}^1$

素因数の和:662708

約数の個数: 48

約数和(自身を含む): 890655360

約数和(自身を除く): 612325980

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 662689, 1325378, 1988067, 2650756, 3313445, 3976134, 4638823, 6626890, 7952268, 9277646, 9940335, 13253780, 13916469, 18555292, 19880670, 23194115, 27832938, 39761340, 46388230, 55665876, 69582345, 92776460, 139164690, 278329380]

約数ペア:

[(1, 278329380), (2, 139164690), (3, 92776460), (4, 69582345), (5, 55665876), (6, 46388230), (7, 39761340), (10, 27832938), (12, 23194115), (14, 19880670), (15, 18555292), (20, 13916469), (21, 13253780), (28, 9940335), (30, 9277646), (35, 7952268), (42, 6626890), (60, 4638823), (70, 3976134), (84, 3313445), (105, 2650756), (140, 1988067), (210, 1325378), (420, 662689)]