20397272

素因数分解:

$2^3\times 7^1\times {\mathrm{191}}^1\times {\mathrm{1907}}^1$

素因数の和:2111

約数の個数: 32

約数和(自身を含む): 43960320

約数和(自身を除く): 23563048

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 191, 382, 764, 1337, 1528, 1907, 2674, 3814, 5348, 7628, 10696, 13349, 15256, 26698, 53396, 106792, 364237, 728474, 1456948, 2549659, 2913896, 5099318, 10198636, 20397272]

約数ペア:

[(1, 20397272), (2, 10198636), (4, 5099318), (7, 2913896), (8, 2549659), (14, 1456948), (28, 728474), (56, 364237), (191, 106792), (382, 53396), (764, 26698), (1337, 15256), (1528, 13349), (1907, 10696), (2674, 7628), (3814, 5348)]