19200280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3967}}^1$

素因数の和:4000

約数の個数: 48

約数和(自身を含む): 47496960

約数和(自身を除く): 28296680

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 3967, 4840, 7934, 15868, 19835, 31736, 39670, 43637, 79340, 87274, 158680, 174548, 218185, 349096, 436370, 480007, 872740, 960014, 1745480, 1920028, 2400035, 3840056, 4800070, 9600140, 19200280]

約数ペア:

[(1, 19200280), (2, 9600140), (4, 4800070), (5, 3840056), (8, 2400035), (10, 1920028), (11, 1745480), (20, 960014), (22, 872740), (40, 480007), (44, 436370), (55, 349096), (88, 218185), (110, 174548), (121, 158680), (220, 87274), (242, 79340), (440, 43637), (484, 39670), (605, 31736), (968, 19835), (1210, 15868), (2420, 7934), (3967, 4840)]