19390250

素因数分解:

$2^1\times 5^3\times {\mathrm{11}}^2\times {\mathrm{641}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 39960648

約数和(自身を除く): 20570398

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 125, 242, 250, 275, 550, 605, 641, 1210, 1282, 1375, 2750, 3025, 3205, 6050, 6410, 7051, 14102, 15125, 16025, 30250, 32050, 35255, 70510, 77561, 80125, 155122, 160250, 176275, 352550, 387805, 775610, 881375, 1762750, 1939025, 3878050, 9695125, 19390250]

約数ペア:

[(1, 19390250), (2, 9695125), (5, 3878050), (10, 1939025), (11, 1762750), (22, 881375), (25, 775610), (50, 387805), (55, 352550), (110, 176275), (121, 160250), (125, 155122), (242, 80125), (250, 77561), (275, 70510), (550, 35255), (605, 32050), (641, 30250), (1210, 16025), (1282, 15125), (1375, 14102), (2750, 7051), (3025, 6410), (3205, 6050)]