78648920

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{40127}}^1$

素因数の和:40152

約数の個数: 48

約数和(自身を含む): 205856640

約数和(自身を除く): 127207720

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, 40127, 80254, 160508, 200635, 280889, 321016, 401270, 561778, 802540, 1123556, 1404445, 1605080, 1966223, 2247112, 2808890, 3932446, 5617780, 7864892, 9831115, 11235560, 15729784, 19662230, 39324460, 78648920]

約数ペア:

[(1, 78648920), (2, 39324460), (4, 19662230), (5, 15729784), (7, 11235560), (8, 9831115), (10, 7864892), (14, 5617780), (20, 3932446), (28, 2808890), (35, 2247112), (40, 1966223), (49, 1605080), (56, 1404445), (70, 1123556), (98, 802540), (140, 561778), (196, 401270), (245, 321016), (280, 280889), (392, 200635), (490, 160508), (980, 80254), (1960, 40127)]