21683440

素因数分解:

$2^4\times 5^1\times {\mathrm{271043}}^1$

素因数の和:271056

約数の個数: 20

約数和(自身を含む): 50414184

約数和(自身を除く): 28730744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271043, 542086, 1084172, 1355215, 2168344, 2710430, 4336688, 5420860, 10841720, 21683440]

約数ペア:

[(1, 21683440), (2, 10841720), (4, 5420860), (5, 4336688), (8, 2710430), (10, 2168344), (16, 1355215), (20, 1084172), (40, 542086), (80, 271043)]