19988499

素因数分解:

$3^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1\times {\mathrm{461}}^1$

素因数の和:710

約数の個数: 16

約数和(自身を含む): 27165600

約数和(自身を除く): 7177101

約数列:

[1, 3, 97, 149, 291, 447, 461, 1383, 14453, 43359, 44717, 68689, 134151, 206067, 6662833, 19988499]

約数ペア:

[(1, 19988499), (3, 6662833), (97, 206067), (149, 134151), (291, 68689), (447, 44717), (461, 43359), (1383, 14453)]