20501488

素因数分解:

$2^4\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1123}}^1$

素因数の和:1301

約数の個数: 40

約数和(自身を含む): 45715328

約数和(自身を除く): 25213840

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 163, 326, 652, 1123, 1141, 1304, 2246, 2282, 2608, 4492, 4564, 7861, 8984, 9128, 15722, 17968, 18256, 31444, 62888, 125776, 183049, 366098, 732196, 1281343, 1464392, 2562686, 2928784, 5125372, 10250744, 20501488]

約数ペア:

[(1, 20501488), (2, 10250744), (4, 5125372), (7, 2928784), (8, 2562686), (14, 1464392), (16, 1281343), (28, 732196), (56, 366098), (112, 183049), (163, 125776), (326, 62888), (652, 31444), (1123, 18256), (1141, 17968), (1304, 15722), (2246, 9128), (2282, 8984), (2608, 7861), (4492, 4564)]