21429321

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{47}}^1\times {\mathrm{421}}^1$

素因数の和:509

約数の個数: 24

約数和(自身を含む): 30870144

約数和(自身を除く): 9440823

約数列:

[1, 3, 19, 47, 57, 141, 361, 421, 893, 1083, 1263, 2679, 7999, 16967, 19787, 23997, 50901, 59361, 151981, 375953, 455943, 1127859, 7143107, 21429321]

約数ペア:

[(1, 21429321), (3, 7143107), (19, 1127859), (47, 455943), (57, 375953), (141, 151981), (361, 59361), (421, 50901), (893, 23997), (1083, 19787), (1263, 16967), (2679, 7999)]