21661773

素因数分解:

$3^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{1459}}^1$

素因数の和:1577

約数の個数: 24

約数和(自身を含む): 33953760

約数和(自身を除く): 12291987

約数列:

[1, 3, 7, 21, 49, 101, 147, 303, 707, 1459, 2121, 4377, 4949, 10213, 14847, 30639, 71491, 147359, 214473, 442077, 1031513, 3094539, 7220591, 21661773]

約数ペア:

[(1, 21661773), (3, 7220591), (7, 3094539), (21, 1031513), (49, 442077), (101, 214473), (147, 147359), (303, 71491), (707, 30639), (1459, 14847), (2121, 10213), (4377, 4949)]