21015340

素因数分解:

$2^2\times 5^1\times {\mathrm{503}}^1\times {\mathrm{2089}}^1$

素因数の和:2601

約数の個数: 24

約数和(自身を含む): 44241120

約数和(自身を除く): 23225780

約数列:

[1, 2, 4, 5, 10, 20, 503, 1006, 2012, 2089, 2515, 4178, 5030, 8356, 10060, 10445, 20890, 41780, 1050767, 2101534, 4203068, 5253835, 10507670, 21015340]

約数ペア:

[(1, 21015340), (2, 10507670), (4, 5253835), (5, 4203068), (10, 2101534), (20, 1050767), (503, 41780), (1006, 20890), (2012, 10445), (2089, 10060), (2515, 8356), (4178, 5030)]