420005120720

素因数分解:

$2^4\times 5^1\times {\mathrm{503}}^1\times {\mathrm{10437503}}^1$

素因数の和:10438019

約数の個数: 40

約数和(自身を含む): 978453374976

約数和(自身を除く): 558448254256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 503, 1006, 2012, 2515, 4024, 5030, 8048, 10060, 20120, 40240, 10437503, 20875006, 41750012, 52187515, 83500024, 104375030, 167000048, 208750060, 417500120, 835000240, 5250064009, 10500128018, 21000256036, 26250320045, 42000512072, 52500640090, 84001024144, 105001280180, 210002560360, 420005120720]

約数ペア:

[(1, 420005120720), (2, 210002560360), (4, 105001280180), (5, 84001024144), (8, 52500640090), (10, 42000512072), (16, 26250320045), (20, 21000256036), (40, 10500128018), (80, 5250064009), (503, 835000240), (1006, 417500120), (2012, 208750060), (2515, 167000048), (4024, 104375030), (5030, 83500024), (8048, 52187515), (10060, 41750012), (20120, 20875006), (40240, 10437503)]