20130321

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{5381}}^1$

素因数の和:5456

約数の個数: 16

約数和(自身を含む): 28416960

約数和(自身を除く): 8286639

約数列:

[1, 3, 29, 43, 87, 129, 1247, 3741, 5381, 16143, 156049, 231383, 468147, 694149, 6710107, 20130321]

約数ペア:

[(1, 20130321), (3, 6710107), (29, 694149), (43, 468147), (87, 231383), (129, 156049), (1247, 16143), (3741, 5381)]