18783088

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1187}}^1$

素因数の和:1261

約数の個数: 40

約数和(自身を含む): 38890368

約数和(自身を除く): 20107280

約数列:

[1, 2, 4, 8, 16, 23, 43, 46, 86, 92, 172, 184, 344, 368, 688, 989, 1187, 1978, 2374, 3956, 4748, 7912, 9496, 15824, 18992, 27301, 51041, 54602, 102082, 109204, 204164, 218408, 408328, 436816, 816656, 1173943, 2347886, 4695772, 9391544, 18783088]

約数ペア:

[(1, 18783088), (2, 9391544), (4, 4695772), (8, 2347886), (16, 1173943), (23, 816656), (43, 436816), (46, 408328), (86, 218408), (92, 204164), (172, 109204), (184, 102082), (344, 54602), (368, 51041), (688, 27301), (989, 18992), (1187, 15824), (1978, 9496), (2374, 7912), (3956, 4748)]