20490064

素因数分解:

$2^4\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1619}}^1$

素因数の和:1747

約数の個数: 40

約数和(自身を含む): 45800640

約数和(自身を除く): 25310576

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 113, 226, 452, 791, 904, 1582, 1619, 1808, 3164, 3238, 6328, 6476, 11333, 12656, 12952, 22666, 25904, 45332, 90664, 181328, 182947, 365894, 731788, 1280629, 1463576, 2561258, 2927152, 5122516, 10245032, 20490064]

約数ペア:

[(1, 20490064), (2, 10245032), (4, 5122516), (7, 2927152), (8, 2561258), (14, 1463576), (16, 1280629), (28, 731788), (56, 365894), (112, 182947), (113, 181328), (226, 90664), (452, 45332), (791, 25904), (904, 22666), (1582, 12952), (1619, 12656), (1808, 11333), (3164, 6476), (3238, 6328)]