21515312

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2111}}^1$

素因数の和:2146

約数の個数: 60

約数和(自身を含む): 52246656

約数和(自身を除く): 30731344

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 49, 52, 56, 91, 98, 104, 112, 182, 196, 208, 364, 392, 637, 728, 784, 1274, 1456, 2111, 2548, 4222, 5096, 8444, 10192, 14777, 16888, 27443, 29554, 33776, 54886, 59108, 103439, 109772, 118216, 192101, 206878, 219544, 236432, 384202, 413756, 439088, 768404, 827512, 1344707, 1536808, 1655024, 2689414, 3073616, 5378828, 10757656, 21515312]

約数ペア:

[(1, 21515312), (2, 10757656), (4, 5378828), (7, 3073616), (8, 2689414), (13, 1655024), (14, 1536808), (16, 1344707), (26, 827512), (28, 768404), (49, 439088), (52, 413756), (56, 384202), (91, 236432), (98, 219544), (104, 206878), (112, 192101), (182, 118216), (196, 109772), (208, 103439), (364, 59108), (392, 54886), (637, 33776), (728, 29554), (784, 27443), (1274, 16888), (1456, 14777), (2111, 10192), (2548, 8444), (4222, 5096)]