21842847

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{8117}}^1$

素因数の和:8159

約数の個数: 24

約数和(自身を含む): 35459424

約数和(自身を除く): 13616577

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 8117, 24351, 73053, 105521, 186691, 316563, 560073, 949689, 1680219, 2426983, 7280949, 21842847]

約数ペア:

[(1, 21842847), (3, 7280949), (9, 2426983), (13, 1680219), (23, 949689), (39, 560073), (69, 316563), (117, 186691), (207, 105521), (299, 73053), (897, 24351), (2691, 8117)]