21498489

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{227}}^1\times {\mathrm{619}}^1$

素因数の和:869

約数の個数: 24

約数和(自身を含む): 33078240

約数和(自身を除く): 11579751

約数列:

[1, 3, 9, 17, 51, 153, 227, 619, 681, 1857, 2043, 3859, 5571, 10523, 11577, 31569, 34731, 94707, 140513, 421539, 1264617, 2388721, 7166163, 21498489]

約数ペア:

[(1, 21498489), (3, 7166163), (9, 2388721), (17, 1264617), (51, 421539), (153, 140513), (227, 94707), (619, 34731), (681, 31569), (1857, 11577), (2043, 10523), (3859, 5571)]