19419790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{11491}}^1$

素因数の和:11524

約数の個数: 24

約数和(自身を含む): 37854648

約数和(自身を除く): 18434858

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 11491, 22982, 57455, 114910, 149383, 298766, 746915, 1493830, 1941979, 3883958, 9709895, 19419790]

約数ペア:

[(1, 19419790), (2, 9709895), (5, 3883958), (10, 1941979), (13, 1493830), (26, 746915), (65, 298766), (130, 149383), (169, 114910), (338, 57455), (845, 22982), (1690, 11491)]