81965885

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{3919}}^1$

素因数の和:4060

約数の個数: 16

約数和(自身を含む): 101606400

約数和(自身を除く): 19640515

約数列:

[1, 5, 47, 89, 235, 445, 3919, 4183, 19595, 20915, 184193, 348791, 920965, 1743955, 16393177, 81965885]

約数ペア:

[(1, 81965885), (5, 16393177), (47, 1743955), (89, 920965), (235, 348791), (445, 184193), (3919, 20915), (4183, 19595)]