21720186

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{70981}}^1$

素因数の和:71006

約数の個数: 24

約数和(自身を含む): 49829364

約数和(自身を除く): 28109178

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 306, 70981, 141962, 212943, 425886, 638829, 1206677, 1277658, 2413354, 3620031, 7240062, 10860093, 21720186]

約数ペア:

[(1, 21720186), (2, 10860093), (3, 7240062), (6, 3620031), (9, 2413354), (17, 1277658), (18, 1206677), (34, 638829), (51, 425886), (102, 212943), (153, 141962), (306, 70981)]