19908684

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{7789}}^1$

素因数の和:7870

約数の個数: 36

約数和(自身を含む): 51040080

約数和(自身を除く): 31131396

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556, 7789, 15578, 23367, 31156, 46734, 70101, 93468, 140202, 280404, 553019, 1106038, 1659057, 2212076, 3318114, 4977171, 6636228, 9954342, 19908684]

約数ペア:

[(1, 19908684), (2, 9954342), (3, 6636228), (4, 4977171), (6, 3318114), (9, 2212076), (12, 1659057), (18, 1106038), (36, 553019), (71, 280404), (142, 140202), (213, 93468), (284, 70101), (426, 46734), (639, 31156), (852, 23367), (1278, 15578), (2556, 7789)]