19991545

素因数分解:

$5^1\times 7^1\times {\mathrm{607}}^1\times {\mathrm{941}}^1$

素因数の和:1560

約数の個数: 16

約数和(自身を含む): 27491328

約数和(自身を除く): 7499783

約数列:

[1, 5, 7, 35, 607, 941, 3035, 4249, 4705, 6587, 21245, 32935, 571187, 2855935, 3998309, 19991545]

約数ペア:

[(1, 19991545), (5, 3998309), (7, 2855935), (35, 571187), (607, 32935), (941, 21245), (3035, 6587), (4249, 4705)]