21001617

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25643}}^1$

素因数の和:25669

約数の個数: 24

約数和(自身を含む): 37337664

約数和(自身を除く): 16336047

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 25643, 76929, 179501, 230787, 333359, 538503, 1000077, 1615509, 2333513, 3000231, 7000539, 21001617]

約数ペア:

[(1, 21001617), (3, 7000539), (7, 3000231), (9, 2333513), (13, 1615509), (21, 1000077), (39, 538503), (63, 333359), (91, 230787), (117, 179501), (273, 76929), (819, 25643)]