21000742028

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{5639297}}^1$

素因数の和:5639334

約数の個数: 36

約数和(自身を含む): 45001598040

約数和(自身を除く): 24000856012

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 49, 76, 98, 133, 196, 266, 532, 931, 1862, 3724, 5639297, 11278594, 22557188, 39475079, 78950158, 107146643, 157900316, 214293286, 276325553, 428586572, 552651106, 750026501, 1105302212, 1500053002, 3000106004, 5250185507, 10500371014, 21000742028]

約数ペア:

[(1, 21000742028), (2, 10500371014), (4, 5250185507), (7, 3000106004), (14, 1500053002), (19, 1105302212), (28, 750026501), (38, 552651106), (49, 428586572), (76, 276325553), (98, 214293286), (133, 157900316), (196, 107146643), (266, 78950158), (532, 39475079), (931, 22557188), (1862, 11278594), (3724, 5639297)]