21082904

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{769}}^1$

素因数の和:947

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 20497096

約数列:

[1, 2, 4, 8, 23, 46, 92, 149, 184, 298, 596, 769, 1192, 1538, 3076, 3427, 6152, 6854, 13708, 17687, 27416, 35374, 70748, 114581, 141496, 229162, 458324, 916648, 2635363, 5270726, 10541452, 21082904]

約数ペア:

[(1, 21082904), (2, 10541452), (4, 5270726), (8, 2635363), (23, 916648), (46, 458324), (92, 229162), (149, 141496), (184, 114581), (298, 70748), (596, 35374), (769, 27416), (1192, 17687), (1538, 13708), (3076, 6854), (3427, 6152)]