19936540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{76679}}^1$

素因数の和:76701

約数の個数: 24

約数和(自身を含む): 45087840

約数和(自身を除く): 25151300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 76679, 153358, 306716, 383395, 766790, 996827, 1533580, 1993654, 3987308, 4984135, 9968270, 19936540]

約数ペア:

[(1, 19936540), (2, 9968270), (4, 4984135), (5, 3987308), (10, 1993654), (13, 1533580), (20, 996827), (26, 766790), (52, 383395), (65, 306716), (130, 153358), (260, 76679)]