21072896

素因数分解:

$2^{10}\times {\mathrm{13}}^1\times {\mathrm{1583}}^1$

素因数の和:1616

約数の個数: 44

約数和(自身を含む): 45394272

約数和(自身を除く): 24321376

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1024, 1583, 1664, 3166, 3328, 6332, 6656, 12664, 13312, 20579, 25328, 41158, 50656, 82316, 101312, 164632, 202624, 329264, 405248, 658528, 810496, 1317056, 1620992, 2634112, 5268224, 10536448, 21072896]

約数ペア:

[(1, 21072896), (2, 10536448), (4, 5268224), (8, 2634112), (13, 1620992), (16, 1317056), (26, 810496), (32, 658528), (52, 405248), (64, 329264), (104, 202624), (128, 164632), (208, 101312), (256, 82316), (416, 50656), (512, 41158), (832, 25328), (1024, 20579), (1583, 13312), (1664, 12664), (3166, 6656), (3328, 6332)]