256049220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{609641}}^1$

素因数の和:609660

約数の個数: 48

約数和(自身を含む): 819358848

約数和(自身を除く): 563309628

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, 609641, 1219282, 1828923, 2438564, 3048205, 3657846, 4267487, 6096410, 7315692, 8534974, 9144615, 12192820, 12802461, 17069948, 18289230, 21337435, 25604922, 36578460, 42674870, 51209844, 64012305, 85349740, 128024610, 256049220]

約数ペア:

[(1, 256049220), (2, 128024610), (3, 85349740), (4, 64012305), (5, 51209844), (6, 42674870), (7, 36578460), (10, 25604922), (12, 21337435), (14, 18289230), (15, 17069948), (20, 12802461), (21, 12192820), (28, 9144615), (30, 8534974), (35, 7315692), (42, 6096410), (60, 4267487), (70, 3657846), (84, 3048205), (105, 2438564), (140, 1828923), (210, 1219282), (420, 609641)]