19813030

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{63913}}^1$

素因数の和:63951

約数の個数: 16

約数和(自身を含む): 36814464

約数和(自身を除く): 17001434

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 63913, 127826, 319565, 639130, 1981303, 3962606, 9906515, 19813030]

約数ペア:

[(1, 19813030), (2, 9906515), (5, 3962606), (10, 1981303), (31, 639130), (62, 319565), (155, 127826), (310, 63913)]