19819940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2113}}^1$

素因数の和:2196

約数の個数: 48

約数和(自身を含む): 48300672

約数和(自身を除く): 28480732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 2113, 2345, 4226, 4690, 8452, 9380, 10565, 14791, 21130, 29582, 42260, 59164, 73955, 141571, 147910, 283142, 295820, 566284, 707855, 990997, 1415710, 1981994, 2831420, 3963988, 4954985, 9909970, 19819940]

約数ペア:

[(1, 19819940), (2, 9909970), (4, 4954985), (5, 3963988), (7, 2831420), (10, 1981994), (14, 1415710), (20, 990997), (28, 707855), (35, 566284), (67, 295820), (70, 283142), (134, 147910), (140, 141571), (268, 73955), (335, 59164), (469, 42260), (670, 29582), (938, 21130), (1340, 14791), (1876, 10565), (2113, 9380), (2345, 8452), (4226, 4690)]