21681140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83389}}^1$

素因数の和:83411

約数の個数: 24

約数和(自身を含む): 49033320

約数和(自身を除く): 27352180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 83389, 166778, 333556, 416945, 833890, 1084057, 1667780, 2168114, 4336228, 5420285, 10840570, 21681140]

約数ペア:

[(1, 21681140), (2, 10840570), (4, 5420285), (5, 4336228), (10, 2168114), (13, 1667780), (20, 1084057), (26, 833890), (52, 416945), (65, 333556), (130, 166778), (260, 83389)]