279211380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{664789}}^1$

素因数の和:664808

約数の個数: 48

約数和(自身を含む): 893477760

約数和(自身を除く): 614266380

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, 664789, 1329578, 1994367, 2659156, 3323945, 3988734, 4653523, 6647890, 7977468, 9307046, 9971835, 13295780, 13960569, 18614092, 19943670, 23267615, 27921138, 39887340, 46535230, 55842276, 69802845, 93070460, 139605690, 279211380]

約数ペア:

[(1, 279211380), (2, 139605690), (3, 93070460), (4, 69802845), (5, 55842276), (6, 46535230), (7, 39887340), (10, 27921138), (12, 23267615), (14, 19943670), (15, 18614092), (20, 13960569), (21, 13295780), (28, 9971835), (30, 9307046), (35, 7977468), (42, 6647890), (60, 4653523), (70, 3988734), (84, 3323945), (105, 2659156), (140, 1994367), (210, 1329578), (420, 664789)]