21014320

素因数分解:

$2^4\times 5^1\times {\mathrm{347}}^1\times {\mathrm{757}}^1$

素因数の和:1117

約数の個数: 40

約数和(自身を含む): 49063824

約数和(自身を除く): 28049504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 347, 694, 757, 1388, 1514, 1735, 2776, 3028, 3470, 3785, 5552, 6056, 6940, 7570, 12112, 13880, 15140, 27760, 30280, 60560, 262679, 525358, 1050716, 1313395, 2101432, 2626790, 4202864, 5253580, 10507160, 21014320]

約数ペア:

[(1, 21014320), (2, 10507160), (4, 5253580), (5, 4202864), (8, 2626790), (10, 2101432), (16, 1313395), (20, 1050716), (40, 525358), (80, 262679), (347, 60560), (694, 30280), (757, 27760), (1388, 15140), (1514, 13880), (1735, 12112), (2776, 7570), (3028, 6940), (3470, 6056), (3785, 5552)]