21966464

素因数分解:

$2^7\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{307}}^1$

素因数の和:377

約数の個数: 64

約数和(自身を含む): 48380640

約数和(自身を除く): 26414176

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 43, 52, 64, 86, 104, 128, 172, 208, 307, 344, 416, 559, 614, 688, 832, 1118, 1228, 1376, 1664, 2236, 2456, 2752, 3991, 4472, 4912, 5504, 7982, 8944, 9824, 13201, 15964, 17888, 19648, 26402, 31928, 35776, 39296, 52804, 63856, 71552, 105608, 127712, 171613, 211216, 255424, 343226, 422432, 510848, 686452, 844864, 1372904, 1689728, 2745808, 5491616, 10983232, 21966464]

約数ペア:

[(1, 21966464), (2, 10983232), (4, 5491616), (8, 2745808), (13, 1689728), (16, 1372904), (26, 844864), (32, 686452), (43, 510848), (52, 422432), (64, 343226), (86, 255424), (104, 211216), (128, 171613), (172, 127712), (208, 105608), (307, 71552), (344, 63856), (416, 52804), (559, 39296), (614, 35776), (688, 31928), (832, 26402), (1118, 19648), (1228, 17888), (1376, 15964), (1664, 13201), (2236, 9824), (2456, 8944), (2752, 7982), (3991, 5504), (4472, 4912)]