281488900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{263}}^1$

素因数の和:434

約数の個数: 144

約数和(自身を含む): 769950720

約数和(自身を除く): 488461820

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 50, 55, 70, 77, 100, 110, 139, 140, 154, 175, 220, 263, 275, 278, 308, 350, 385, 526, 550, 556, 695, 700, 770, 973, 1052, 1100, 1315, 1390, 1529, 1540, 1841, 1925, 1946, 2630, 2780, 2893, 3058, 3475, 3682, 3850, 3892, 4865, 5260, 5786, 6116, 6575, 6950, 7364, 7645, 7700, 9205, 9730, 10703, 11572, 13150, 13900, 14465, 15290, 18410, 19460, 20251, 21406, 24325, 26300, 28930, 30580, 36557, 36820, 38225, 40502, 42812, 46025, 48650, 53515, 57860, 72325, 73114, 76450, 81004, 92050, 97300, 101255, 107030, 144650, 146228, 152900, 182785, 184100, 202510, 214060, 255899, 267575, 289300, 365570, 402127, 405020, 506275, 511798, 535150, 731140, 804254, 913925, 1012550, 1023596, 1070300, 1279495, 1608508, 1827850, 2010635, 2025100, 2558990, 2814889, 3655700, 4021270, 5117980, 5629778, 6397475, 8042540, 10053175, 11259556, 12794950, 14074445, 20106350, 25589900, 28148890, 40212700, 56297780, 70372225, 140744450, 281488900]

約数ペア:

[(1, 281488900), (2, 140744450), (4, 70372225), (5, 56297780), (7, 40212700), (10, 28148890), (11, 25589900), (14, 20106350), (20, 14074445), (22, 12794950), (25, 11259556), (28, 10053175), (35, 8042540), (44, 6397475), (50, 5629778), (55, 5117980), (70, 4021270), (77, 3655700), (100, 2814889), (110, 2558990), (139, 2025100), (140, 2010635), (154, 1827850), (175, 1608508), (220, 1279495), (263, 1070300), (275, 1023596), (278, 1012550), (308, 913925), (350, 804254), (385, 731140), (526, 535150), (550, 511798), (556, 506275), (695, 405020), (700, 402127), (770, 365570), (973, 289300), (1052, 267575), (1100, 255899), (1315, 214060), (1390, 202510), (1529, 184100), (1540, 182785), (1841, 152900), (1925, 146228), (1946, 144650), (2630, 107030), (2780, 101255), (2893, 97300), (3058, 92050), (3475, 81004), (3682, 76450), (3850, 73114), (3892, 72325), (4865, 57860), (5260, 53515), (5786, 48650), (6116, 46025), (6575, 42812), (6950, 40502), (7364, 38225), (7645, 36820), (7700, 36557), (9205, 30580), (9730, 28930), (10703, 26300), (11572, 24325), (13150, 21406), (13900, 20251), (14465, 19460), (15290, 18410)]