21856653

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{26687}}^1$

素因数の和:26713

約数の個数: 24

約数和(自身を含む): 38857728

約数和(自身を除く): 17001075

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 26687, 80061, 186809, 240183, 346931, 560427, 1040793, 1681281, 2428517, 3122379, 7285551, 21856653]

約数ペア:

[(1, 21856653), (3, 7285551), (7, 3122379), (9, 2428517), (13, 1681281), (21, 1040793), (39, 560427), (63, 346931), (91, 240183), (117, 186809), (273, 80061), (819, 26687)]