19937588

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 40255488

約数和(自身を除く): 20317900

約数列:

[1, 2, 4, 11, 22, 31, 44, 47, 62, 94, 124, 188, 311, 341, 517, 622, 682, 1034, 1244, 1364, 1457, 2068, 2914, 3421, 5828, 6842, 9641, 13684, 14617, 16027, 19282, 29234, 32054, 38564, 58468, 64108, 106051, 160787, 212102, 321574, 424204, 453127, 643148, 906254, 1812508, 4984397, 9968794, 19937588]

約数ペア:

[(1, 19937588), (2, 9968794), (4, 4984397), (11, 1812508), (22, 906254), (31, 643148), (44, 453127), (47, 424204), (62, 321574), (94, 212102), (124, 160787), (188, 106051), (311, 64108), (341, 58468), (517, 38564), (622, 32054), (682, 29234), (1034, 19282), (1244, 16027), (1364, 14617), (1457, 13684), (2068, 9641), (2914, 6842), (3421, 5828)]