20448680

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10433}}^1$

素因数の和:10458

約数の個数: 48

約数和(自身を含む): 53526420

約数和(自身を除く): 33077740

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10433, 20866, 41732, 52165, 73031, 83464, 104330, 146062, 208660, 292124, 365155, 417320, 511217, 584248, 730310, 1022434, 1460620, 2044868, 2556085, 2921240, 4089736, 5112170, 10224340, 20448680]

約数ペア:

[(1, 20448680), (2, 10224340), (4, 5112170), (5, 4089736), (7, 2921240), (8, 2556085), (10, 2044868), (14, 1460620), (20, 1022434), (28, 730310), (35, 584248), (40, 511217), (49, 417320), (56, 365155), (70, 292124), (98, 208660), (140, 146062), (196, 104330), (245, 83464), (280, 73031), (392, 52165), (490, 41732), (980, 20866), (1960, 10433)]