21100509

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{601}}^1$

素因数の和:737

約数の個数: 24

約数和(自身を含む): 31554432

約数和(自身を除く): 10453923

約数列:

[1, 3, 9, 47, 83, 141, 249, 423, 601, 747, 1803, 3901, 5409, 11703, 28247, 35109, 49883, 84741, 149649, 254223, 448947, 2344501, 7033503, 21100509]

約数ペア:

[(1, 21100509), (3, 7033503), (9, 2344501), (47, 448947), (83, 254223), (141, 149649), (249, 84741), (423, 49883), (601, 35109), (747, 28247), (1803, 11703), (3901, 5409)]