21009229

素因数分解:

${\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{263}}^1$

素因数の和:444

約数の個数: 16

約数和(自身を含む): 23113728

約数和(自身を除く): 2104499

約数列:

[1, 17, 37, 127, 263, 629, 2159, 4471, 4699, 9731, 33401, 79883, 165427, 567817, 1235837, 21009229]

約数ペア:

[(1, 21009229), (17, 1235837), (37, 567817), (127, 165427), (263, 79883), (629, 33401), (2159, 9731), (4471, 4699)]