20267440

素因数分解:

$2^4\times 5^1\times {\mathrm{253343}}^1$

素因数の和:253356

約数の個数: 20

約数和(自身を含む): 47121984

約数和(自身を除く): 26854544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 253343, 506686, 1013372, 1266715, 2026744, 2533430, 4053488, 5066860, 10133720, 20267440]

約数ペア:

[(1, 20267440), (2, 10133720), (4, 5066860), (5, 4053488), (8, 2533430), (10, 2026744), (16, 1266715), (20, 1013372), (40, 506686), (80, 253343)]