21356144

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{443}}^1$

素因数の和:605

約数の個数: 40

約数和(自身を含む): 43604352

約数和(自身を除く): 22248208

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 131, 184, 262, 368, 443, 524, 886, 1048, 1772, 2096, 3013, 3544, 6026, 7088, 10189, 12052, 20378, 24104, 40756, 48208, 58033, 81512, 116066, 163024, 232132, 464264, 928528, 1334759, 2669518, 5339036, 10678072, 21356144]

約数ペア:

[(1, 21356144), (2, 10678072), (4, 5339036), (8, 2669518), (16, 1334759), (23, 928528), (46, 464264), (92, 232132), (131, 163024), (184, 116066), (262, 81512), (368, 58033), (443, 48208), (524, 40756), (886, 24104), (1048, 20378), (1772, 12052), (2096, 10189), (3013, 7088), (3544, 6026)]