20999386

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{8699}}^1$

素因数の和:8789

約数の個数: 16

約数和(自身を含む): 33825600

約数和(自身を除く): 12826214

約数列:

[1, 2, 17, 34, 71, 142, 1207, 2414, 8699, 17398, 147883, 295766, 617629, 1235258, 10499693, 20999386]

約数ペア:

[(1, 20999386), (2, 10499693), (17, 1235258), (34, 617629), (71, 295766), (142, 147883), (1207, 17398), (2414, 8699)]