21651984

素因数分解:

$2^4\times 3^2\times {\mathrm{53}}^1\times {\mathrm{2837}}^1$

素因数の和:2904

約数の個数: 60

約数和(自身を含む): 61760556

約数和(自身を除く): 40108572

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 53, 72, 106, 144, 159, 212, 318, 424, 477, 636, 848, 954, 1272, 1908, 2544, 2837, 3816, 5674, 7632, 8511, 11348, 17022, 22696, 25533, 34044, 45392, 51066, 68088, 102132, 136176, 150361, 204264, 300722, 408528, 451083, 601444, 902166, 1202888, 1353249, 1804332, 2405776, 2706498, 3608664, 5412996, 7217328, 10825992, 21651984]

約数ペア:

[(1, 21651984), (2, 10825992), (3, 7217328), (4, 5412996), (6, 3608664), (8, 2706498), (9, 2405776), (12, 1804332), (16, 1353249), (18, 1202888), (24, 902166), (36, 601444), (48, 451083), (53, 408528), (72, 300722), (106, 204264), (144, 150361), (159, 136176), (212, 102132), (318, 68088), (424, 51066), (477, 45392), (636, 34044), (848, 25533), (954, 22696), (1272, 17022), (1908, 11348), (2544, 8511), (2837, 7632), (3816, 5674)]