21000570605

素因数分解:

$5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1\times {\mathrm{54443}}^1$

素因数の和:54665

約数の個数: 32

約数和(自身を含む): 29352720384

約数和(自身を除く): 8352149779

約数列:

[1, 5, 7, 35, 103, 107, 515, 535, 721, 749, 3605, 3745, 11021, 54443, 55105, 77147, 272215, 381101, 385735, 1905505, 5607629, 5825401, 28038145, 29127005, 39253403, 40777807, 196267015, 203889035, 600016303, 3000081515, 4200114121, 21000570605]

約数ペア:

[(1, 21000570605), (5, 4200114121), (7, 3000081515), (35, 600016303), (103, 203889035), (107, 196267015), (515, 40777807), (535, 39253403), (721, 29127005), (749, 28038145), (3605, 5825401), (3745, 5607629), (11021, 1905505), (54443, 385735), (55105, 381101), (77147, 272215)]