21490719

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{3449}}^1$

素因数の和:3550

約数の個数: 16

約数和(自身を含む): 30028800

約数和(自身を除く): 8538081

約数列:

[1, 3, 31, 67, 93, 201, 2077, 3449, 6231, 10347, 106919, 231083, 320757, 693249, 7163573, 21490719]

約数ペア:

[(1, 21490719), (3, 7163573), (31, 693249), (67, 320757), (93, 231083), (201, 106919), (2077, 10347), (3449, 6231)]