21938109

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{4259}}^1$

素因数の和:4380

約数の個数: 16

約数和(自身を含む): 31285440

約数和(自身を除く): 9347331

約数列:

[1, 3, 17, 51, 101, 303, 1717, 4259, 5151, 12777, 72403, 217209, 430159, 1290477, 7312703, 21938109]

約数ペア:

[(1, 21938109), (3, 7312703), (17, 1290477), (51, 430159), (101, 217209), (303, 72403), (1717, 12777), (4259, 5151)]