21156328

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{1217}}^1$

素因数の和:1317

約数の個数: 32

約数和(自身を含む): 41436360

約数和(自身を除く): 20280032

約数列:

[1, 2, 4, 8, 41, 53, 82, 106, 164, 212, 328, 424, 1217, 2173, 2434, 4346, 4868, 8692, 9736, 17384, 49897, 64501, 99794, 129002, 199588, 258004, 399176, 516008, 2644541, 5289082, 10578164, 21156328]

約数ペア:

[(1, 21156328), (2, 10578164), (4, 5289082), (8, 2644541), (41, 516008), (53, 399176), (82, 258004), (106, 199588), (164, 129002), (212, 99794), (328, 64501), (424, 49897), (1217, 17384), (2173, 9736), (2434, 8692), (4346, 4868)]