21275406

素因数分解:

$2^1\times 3^3\times {\mathrm{393989}}^1$

素因数の和:394000

約数の個数: 16

約数和(自身を含む): 47278800

約数和(自身を除く): 26003394

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 393989, 787978, 1181967, 2363934, 3545901, 7091802, 10637703, 21275406]

約数ペア:

[(1, 21275406), (2, 10637703), (3, 7091802), (6, 3545901), (9, 2363934), (18, 1181967), (27, 787978), (54, 393989)]