21509728

素因数分解:

$2^5\times {\mathrm{37}}^2\times {\mathrm{491}}^1$

素因数の和:575

約数の個数: 36

約数和(自身を含む): 43611372

約数和(自身を除く): 22101644

約数列:

[1, 2, 4, 8, 16, 32, 37, 74, 148, 296, 491, 592, 982, 1184, 1369, 1964, 2738, 3928, 5476, 7856, 10952, 15712, 18167, 21904, 36334, 43808, 72668, 145336, 290672, 581344, 672179, 1344358, 2688716, 5377432, 10754864, 21509728]

約数ペア:

[(1, 21509728), (2, 10754864), (4, 5377432), (8, 2688716), (16, 1344358), (32, 672179), (37, 581344), (74, 290672), (148, 145336), (296, 72668), (491, 43808), (592, 36334), (982, 21904), (1184, 18167), (1369, 15712), (1964, 10952), (2738, 7856), (3928, 5476)]