20017868

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{20261}}^1$

素因数の和:20297

約数の個数: 24

約数和(自身を含む): 39713520

約数和(自身を除く): 19695652

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 494, 988, 20261, 40522, 81044, 263393, 384959, 526786, 769918, 1053572, 1539836, 5004467, 10008934, 20017868]

約数ペア:

[(1, 20017868), (2, 10008934), (4, 5004467), (13, 1539836), (19, 1053572), (26, 769918), (38, 526786), (52, 384959), (76, 263393), (247, 81044), (494, 40522), (988, 20261)]