19881705

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{28201}}^1$

素因数の和:28256

約数の個数: 16

約数和(自身を含む): 32488704

約数和(自身を除く): 12606999

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 28201, 84603, 141005, 423015, 1325447, 3976341, 6627235, 19881705]

約数ペア:

[(1, 19881705), (3, 6627235), (5, 3976341), (15, 1325447), (47, 423015), (141, 141005), (235, 84603), (705, 28201)]