21376085

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{269}}^1\times {\mathrm{691}}^1$

素因数の和:988

約数の個数: 16

約数和(自身を含む): 26904960

約数和(自身を除く): 5528875

約数列:

[1, 5, 23, 115, 269, 691, 1345, 3455, 6187, 15893, 30935, 79465, 185879, 929395, 4275217, 21376085]

約数ペア:

[(1, 21376085), (5, 4275217), (23, 929395), (115, 185879), (269, 79465), (691, 30935), (1345, 15893), (3455, 6187)]