20999576

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{201919}}^1$

素因数の和:201938

約数の個数: 16

約数和(自身を含む): 42403200

約数和(自身を除く): 21403624

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 201919, 403838, 807676, 1615352, 2624947, 5249894, 10499788, 20999576]

約数ペア:

[(1, 20999576), (2, 10499788), (4, 5249894), (8, 2624947), (13, 1615352), (26, 807676), (52, 403838), (104, 201919)]