21943971

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7411}}^1$

素因数の和:7471

約数の個数: 24

約数和(自身を含む): 37000704

約数和(自身を除く): 15056733

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 7411, 22233, 51877, 66699, 155631, 348317, 466893, 1044951, 2438219, 3134853, 7314657, 21943971]

約数ペア:

[(1, 21943971), (3, 7314657), (7, 3134853), (9, 2438219), (21, 1044951), (47, 466893), (63, 348317), (141, 155631), (329, 66699), (423, 51877), (987, 22233), (2961, 7411)]