19999534

素因数分解:

$2^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{1553}}^1$

素因数の和:1739

約数の個数: 16

約数和(自身を含む): 30881088

約数和(自身を除く): 10881554

約数列:

[1, 2, 47, 94, 137, 274, 1553, 3106, 6439, 12878, 72991, 145982, 212761, 425522, 9999767, 19999534]

約数ペア:

[(1, 19999534), (2, 9999767), (47, 425522), (94, 212761), (137, 145982), (274, 72991), (1553, 12878), (3106, 6439)]