12781160

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{6521}}^1$

素因数の和:6546

約数の個数: 48

約数和(自身を含む): 33457860

約数和(自身を除く): 20676700

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, 6521, 13042, 26084, 32605, 45647, 52168, 65210, 91294, 130420, 182588, 228235, 260840, 319529, 365176, 456470, 639058, 912940, 1278116, 1597645, 1825880, 2556232, 3195290, 6390580, 12781160]

約数ペア:

[(1, 12781160), (2, 6390580), (4, 3195290), (5, 2556232), (7, 1825880), (8, 1597645), (10, 1278116), (14, 912940), (20, 639058), (28, 456470), (35, 365176), (40, 319529), (49, 260840), (56, 228235), (70, 182588), (98, 130420), (140, 91294), (196, 65210), (245, 52168), (280, 45647), (392, 32605), (490, 26084), (980, 13042), (1960, 6521)]