21297912

素因数分解:

$2^3\times 3^1\times {\mathrm{401}}^1\times {\mathrm{2213}}^1$

素因数の和:2623

約数の個数: 32

約数和(自身を含む): 53401680

約数和(自身を除く): 32103768

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 401, 802, 1203, 1604, 2213, 2406, 3208, 4426, 4812, 6639, 8852, 9624, 13278, 17704, 26556, 53112, 887413, 1774826, 2662239, 3549652, 5324478, 7099304, 10648956, 21297912]

約数ペア:

[(1, 21297912), (2, 10648956), (3, 7099304), (4, 5324478), (6, 3549652), (8, 2662239), (12, 1774826), (24, 887413), (401, 53112), (802, 26556), (1203, 17704), (1604, 13278), (2213, 9624), (2406, 8852), (3208, 6639), (4426, 4812)]