18991456

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{331}}^1$

素因数の和:515

約数の個数: 48

約数和(自身を含む): 41162688

約数和(自身を除く): 22171232

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 163, 176, 326, 331, 352, 652, 662, 1304, 1324, 1793, 2608, 2648, 3586, 3641, 5216, 5296, 7172, 7282, 10592, 14344, 14564, 28688, 29128, 53953, 57376, 58256, 107906, 116512, 215812, 431624, 593483, 863248, 1186966, 1726496, 2373932, 4747864, 9495728, 18991456]

約数ペア:

[(1, 18991456), (2, 9495728), (4, 4747864), (8, 2373932), (11, 1726496), (16, 1186966), (22, 863248), (32, 593483), (44, 431624), (88, 215812), (163, 116512), (176, 107906), (326, 58256), (331, 57376), (352, 53953), (652, 29128), (662, 28688), (1304, 14564), (1324, 14344), (1793, 10592), (2608, 7282), (2648, 7172), (3586, 5296), (3641, 5216)]