21099406

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{6421}}^1$

素因数の和:6507

約数の個数: 16

約数和(自身を含む): 33291648

約数和(自身を除く): 12192242

約数列:

[1, 2, 31, 53, 62, 106, 1643, 3286, 6421, 12842, 199051, 340313, 398102, 680626, 10549703, 21099406]

約数ペア:

[(1, 21099406), (2, 10549703), (31, 680626), (53, 398102), (62, 340313), (106, 199051), (1643, 12842), (3286, 6421)]