20521683

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25057}}^1$

素因数の和:25083

約数の個数: 24

約数和(自身を含む): 36484448

約数和(自身を除く): 15962765

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 25057, 75171, 175399, 225513, 325741, 526197, 977223, 1578591, 2280187, 2931669, 6840561, 20521683]

約数ペア:

[(1, 20521683), (3, 6840561), (7, 2931669), (9, 2280187), (13, 1578591), (21, 977223), (39, 526197), (63, 325741), (91, 225513), (117, 175399), (273, 75171), (819, 25057)]