19689213

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{2459}}^1$

素因数の和:2636

約数の個数: 16

約数和(自身を含む): 27984960

約数和(自身を除く): 8295747

約数列:

[1, 3, 17, 51, 157, 471, 2459, 2669, 7377, 8007, 41803, 125409, 386063, 1158189, 6563071, 19689213]

約数ペア:

[(1, 19689213), (3, 6563071), (17, 1158189), (51, 386063), (157, 125409), (471, 41803), (2459, 8007), (2669, 7377)]