19918908

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{7793}}^1$

素因数の和:7874

約数の個数: 36

約数和(自身を含む): 51066288

約数和(自身を除く): 31147380

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556, 7793, 15586, 23379, 31172, 46758, 70137, 93516, 140274, 280548, 553303, 1106606, 1659909, 2213212, 3319818, 4979727, 6639636, 9959454, 19918908]

約数ペア:

[(1, 19918908), (2, 9959454), (3, 6639636), (4, 4979727), (6, 3319818), (9, 2213212), (12, 1659909), (18, 1106606), (36, 553303), (71, 280548), (142, 140274), (213, 93516), (284, 70137), (426, 46758), (639, 31172), (852, 23379), (1278, 15586), (2556, 7793)]