21290273

素因数分解:

${\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{569}}^1$

素因数の和:688

約数の個数: 16

約数和(自身を含む): 23639040

約数和(自身を除く): 2348767

約数列:

[1, 17, 31, 71, 527, 569, 1207, 2201, 9673, 17639, 37417, 40399, 299863, 686783, 1252369, 21290273]

約数ペア:

[(1, 21290273), (17, 1252369), (31, 686783), (71, 299863), (527, 40399), (569, 37417), (1207, 17639), (2201, 9673)]