21965838

素因数分解:

$2^1\times 3^1\times {\mathrm{71}}^1\times {\mathrm{51563}}^1$

素因数の和:51639

約数の個数: 16

約数和(自身を含む): 44551296

約数和(自身を除く): 22585458

約数列:

[1, 2, 3, 6, 71, 142, 213, 426, 51563, 103126, 154689, 309378, 3660973, 7321946, 10982919, 21965838]

約数ペア:

[(1, 21965838), (2, 10982919), (3, 7321946), (6, 3660973), (71, 309378), (142, 154689), (213, 103126), (426, 51563)]