21079265

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{4721}}^1$

素因数の和:4792

約数の個数: 16

約数和(自身を含む): 27198720

約数和(自身を除く): 6119455

約数列:

[1, 5, 19, 47, 95, 235, 893, 4465, 4721, 23605, 89699, 221887, 448495, 1109435, 4215853, 21079265]

約数ペア:

[(1, 21079265), (5, 4215853), (19, 1109435), (47, 448495), (95, 221887), (235, 89699), (893, 23605), (4465, 4721)]