19742260

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13903}}^1$

素因数の和:13983

約数の個数: 24

約数和(自身を含む): 42045696

約数和(自身を除く): 22303436

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13903, 27806, 55612, 69515, 139030, 278060, 987113, 1974226, 3948452, 4935565, 9871130, 19742260]

約数ペア:

[(1, 19742260), (2, 9871130), (4, 4935565), (5, 3948452), (10, 1974226), (20, 987113), (71, 278060), (142, 139030), (284, 69515), (355, 55612), (710, 27806), (1420, 13903)]