20814140

素因数分解:

$2^2\times 5^1\times {\mathrm{503}}^1\times {\mathrm{2069}}^1$

素因数の和:2581

約数の個数: 24

約数和(自身を含む): 43817760

約数和(自身を除く): 23003620

約数列:

[1, 2, 4, 5, 10, 20, 503, 1006, 2012, 2069, 2515, 4138, 5030, 8276, 10060, 10345, 20690, 41380, 1040707, 2081414, 4162828, 5203535, 10407070, 20814140]

約数ペア:

[(1, 20814140), (2, 10407070), (4, 5203535), (5, 4162828), (10, 2081414), (20, 1040707), (503, 41380), (1006, 20690), (2012, 10345), (2069, 10060), (2515, 8276), (4138, 5030)]