21261816

素因数分解:

$2^3\times 3^2\times {\mathrm{197}}^1\times {\mathrm{1499}}^1$

素因数の和:1708

約数の個数: 48

約数和(自身を含む): 57915000

約数和(自身を除く): 36653184

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 197, 394, 591, 788, 1182, 1499, 1576, 1773, 2364, 2998, 3546, 4497, 4728, 5996, 7092, 8994, 11992, 13491, 14184, 17988, 26982, 35976, 53964, 107928, 295303, 590606, 885909, 1181212, 1771818, 2362424, 2657727, 3543636, 5315454, 7087272, 10630908, 21261816]

約数ペア:

[(1, 21261816), (2, 10630908), (3, 7087272), (4, 5315454), (6, 3543636), (8, 2657727), (9, 2362424), (12, 1771818), (18, 1181212), (24, 885909), (36, 590606), (72, 295303), (197, 107928), (394, 53964), (591, 35976), (788, 26982), (1182, 17988), (1499, 14184), (1576, 13491), (1773, 11992), (2364, 8994), (2998, 7092), (3546, 5996), (4497, 4728)]