201980900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{1321}}^1$

素因数の和:1485

約数の個数: 72

約数和(自身を含む): 481948320

約数和(自身を除く): 279967420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 139, 220, 275, 278, 550, 556, 695, 1100, 1321, 1390, 1529, 2642, 2780, 3058, 3475, 5284, 6116, 6605, 6950, 7645, 13210, 13900, 14531, 15290, 26420, 29062, 30580, 33025, 38225, 58124, 66050, 72655, 76450, 132100, 145310, 152900, 183619, 290620, 363275, 367238, 726550, 734476, 918095, 1453100, 1836190, 2019809, 3672380, 4039618, 4590475, 8079236, 9180950, 10099045, 18361900, 20198090, 40396180, 50495225, 100990450, 201980900]

約数ペア:

[(1, 201980900), (2, 100990450), (4, 50495225), (5, 40396180), (10, 20198090), (11, 18361900), (20, 10099045), (22, 9180950), (25, 8079236), (44, 4590475), (50, 4039618), (55, 3672380), (100, 2019809), (110, 1836190), (139, 1453100), (220, 918095), (275, 734476), (278, 726550), (550, 367238), (556, 363275), (695, 290620), (1100, 183619), (1321, 152900), (1390, 145310), (1529, 132100), (2642, 76450), (2780, 72655), (3058, 66050), (3475, 58124), (5284, 38225), (6116, 33025), (6605, 30580), (6950, 29062), (7645, 26420), (13210, 15290), (13900, 14531)]