20123312

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2659}}^1$

素因数の和:2721

約数の個数: 40

約数和(自身を含む): 43538880

約数和(自身を除く): 23415568

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 86, 88, 172, 176, 344, 473, 688, 946, 1892, 2659, 3784, 5318, 7568, 10636, 21272, 29249, 42544, 58498, 114337, 116996, 228674, 233992, 457348, 467984, 914696, 1257707, 1829392, 2515414, 5030828, 10061656, 20123312]

約数ペア:

[(1, 20123312), (2, 10061656), (4, 5030828), (8, 2515414), (11, 1829392), (16, 1257707), (22, 914696), (43, 467984), (44, 457348), (86, 233992), (88, 228674), (172, 116996), (176, 114337), (344, 58498), (473, 42544), (688, 29249), (946, 21272), (1892, 10636), (2659, 7568), (3784, 5318)]