18561136

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{647}}^1$

素因数の和:829

約数の個数: 40

約数和(自身を含む): 39533184

約数和(自身を除く): 20972048

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 163, 176, 326, 647, 652, 1294, 1304, 1793, 2588, 2608, 3586, 5176, 7117, 7172, 10352, 14234, 14344, 28468, 28688, 56936, 105461, 113872, 210922, 421844, 843688, 1160071, 1687376, 2320142, 4640284, 9280568, 18561136]

約数ペア:

[(1, 18561136), (2, 9280568), (4, 4640284), (8, 2320142), (11, 1687376), (16, 1160071), (22, 843688), (44, 421844), (88, 210922), (163, 113872), (176, 105461), (326, 56936), (647, 28688), (652, 28468), (1294, 14344), (1304, 14234), (1793, 10352), (2588, 7172), (2608, 7117), (3586, 5176)]