18664940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{133321}}^1$

素因数の和:133337

約数の個数: 24

約数和(自身を含む): 44796192

約数和(自身を除く): 26131252

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 133321, 266642, 533284, 666605, 933247, 1333210, 1866494, 2666420, 3732988, 4666235, 9332470, 18664940]

約数ペア:

[(1, 18664940), (2, 9332470), (4, 4666235), (5, 3732988), (7, 2666420), (10, 1866494), (14, 1333210), (20, 933247), (28, 666605), (35, 533284), (70, 266642), (140, 133321)]