21541653

素因数分解:

$3^3\times 7^1\times {\mathrm{293}}^1\times {\mathrm{389}}^1$

素因数の和:698

約数の個数: 32

約数和(自身を含む): 36691200

約数和(自身を除く): 15149547

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 293, 389, 879, 1167, 2051, 2637, 2723, 3501, 6153, 7911, 8169, 10503, 18459, 24507, 55377, 73521, 113977, 341931, 797839, 1025793, 2393517, 3077379, 7180551, 21541653]

約数ペア:

[(1, 21541653), (3, 7180551), (7, 3077379), (9, 2393517), (21, 1025793), (27, 797839), (63, 341931), (189, 113977), (293, 73521), (389, 55377), (879, 24507), (1167, 18459), (2051, 10503), (2637, 8169), (2723, 7911), (3501, 6153)]