21274773

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{17597}}^1$

素因数の和:17644

約数の個数: 16

約数和(自身を含む): 31535616

約数和(自身を除く): 10260843

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 17597, 52791, 228761, 545507, 686283, 1636521, 7091591, 21274773]

約数ペア:

[(1, 21274773), (3, 7091591), (13, 1636521), (31, 686283), (39, 545507), (93, 228761), (403, 52791), (1209, 17597)]