19881795

素因数分解:

$3^1\times 5^1\times {\mathrm{227}}^1\times {\mathrm{5839}}^1$

素因数の和:6074

約数の個数: 16

約数和(自身を含む): 31956480

約数和(自身を除く): 12074685

約数列:

[1, 3, 5, 15, 227, 681, 1135, 3405, 5839, 17517, 29195, 87585, 1325453, 3976359, 6627265, 19881795]

約数ペア:

[(1, 19881795), (3, 6627265), (5, 3976359), (15, 1325453), (227, 87585), (681, 29195), (1135, 17517), (3405, 5839)]