21169971

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1423}}^1$

素因数の和:1480

約数の個数: 32

約数和(自身を含む): 34176000

約数和(自身を除く): 13006029

約数列:

[1, 3, 9, 19, 27, 29, 57, 87, 171, 261, 513, 551, 783, 1423, 1653, 4269, 4959, 12807, 14877, 27037, 38421, 41267, 81111, 123801, 243333, 371403, 729999, 784073, 1114209, 2352219, 7056657, 21169971]

約数ペア:

[(1, 21169971), (3, 7056657), (9, 2352219), (19, 1114209), (27, 784073), (29, 729999), (57, 371403), (87, 243333), (171, 123801), (261, 81111), (513, 41267), (551, 38421), (783, 27037), (1423, 14877), (1653, 12807), (4269, 4959)]