20931488

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{353}}^1$

素因数の和:489

約数の個数: 48

約数和(自身を含む): 44157960

約数和(自身を除く): 23226472

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 109, 136, 218, 272, 353, 436, 544, 706, 872, 1412, 1744, 1853, 2824, 3488, 3706, 5648, 6001, 7412, 11296, 12002, 14824, 24004, 29648, 38477, 48008, 59296, 76954, 96016, 153908, 192032, 307816, 615632, 654109, 1231264, 1308218, 2616436, 5232872, 10465744, 20931488]

約数ペア:

[(1, 20931488), (2, 10465744), (4, 5232872), (8, 2616436), (16, 1308218), (17, 1231264), (32, 654109), (34, 615632), (68, 307816), (109, 192032), (136, 153908), (218, 96016), (272, 76954), (353, 59296), (436, 48008), (544, 38477), (706, 29648), (872, 24004), (1412, 14824), (1744, 12002), (1853, 11296), (2824, 7412), (3488, 6001), (3706, 5648)]