21385958

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{2309}}^1$

素因数の和:2743

約数の個数: 16

約数和(自身を含む): 35093520

約数和(自身を除く): 13707562

約数列:

[1, 2, 11, 22, 421, 842, 2309, 4618, 4631, 9262, 25399, 50798, 972089, 1944178, 10692979, 21385958]

約数ペア:

[(1, 21385958), (2, 10692979), (11, 1944178), (22, 972089), (421, 50798), (842, 25399), (2309, 9262), (4618, 4631)]