21045973

素因数分解:

${\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{331}}^1$

素因数の和:484

約数の個数: 16

約数和(自身を含む): 23388736

約数和(自身を除く): 2342763

約数列:

[1, 13, 67, 73, 331, 871, 949, 4303, 4891, 22177, 24163, 63583, 288301, 314119, 1618921, 21045973]

約数ペア:

[(1, 21045973), (13, 1618921), (67, 314119), (73, 288301), (331, 63583), (871, 24163), (949, 22177), (4303, 4891)]