28227780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{521}}^1$

素因数の和:586

約数の個数: 144

約数和(自身を含む): 100324224

約数和(自身を除く): 72096444

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 43, 45, 60, 63, 70, 84, 86, 90, 105, 126, 129, 140, 172, 180, 210, 215, 252, 258, 301, 315, 387, 420, 430, 516, 521, 602, 630, 645, 774, 860, 903, 1042, 1204, 1260, 1290, 1505, 1548, 1563, 1806, 1935, 2084, 2580, 2605, 2709, 3010, 3126, 3612, 3647, 3870, 4515, 4689, 5210, 5418, 6020, 6252, 7294, 7740, 7815, 9030, 9378, 10420, 10836, 10941, 13545, 14588, 15630, 18060, 18235, 18756, 21882, 22403, 23445, 27090, 31260, 32823, 36470, 43764, 44806, 46890, 54180, 54705, 65646, 67209, 72940, 89612, 93780, 109410, 112015, 131292, 134418, 156821, 164115, 201627, 218820, 224030, 268836, 313642, 328230, 336045, 403254, 448060, 470463, 627284, 656460, 672090, 784105, 806508, 940926, 1008135, 1344180, 1411389, 1568210, 1881852, 2016270, 2352315, 2822778, 3136420, 4032540, 4704630, 5645556, 7056945, 9409260, 14113890, 28227780]

約数ペア:

[(1, 28227780), (2, 14113890), (3, 9409260), (4, 7056945), (5, 5645556), (6, 4704630), (7, 4032540), (9, 3136420), (10, 2822778), (12, 2352315), (14, 2016270), (15, 1881852), (18, 1568210), (20, 1411389), (21, 1344180), (28, 1008135), (30, 940926), (35, 806508), (36, 784105), (42, 672090), (43, 656460), (45, 627284), (60, 470463), (63, 448060), (70, 403254), (84, 336045), (86, 328230), (90, 313642), (105, 268836), (126, 224030), (129, 218820), (140, 201627), (172, 164115), (180, 156821), (210, 134418), (215, 131292), (252, 112015), (258, 109410), (301, 93780), (315, 89612), (387, 72940), (420, 67209), (430, 65646), (516, 54705), (521, 54180), (602, 46890), (630, 44806), (645, 43764), (774, 36470), (860, 32823), (903, 31260), (1042, 27090), (1204, 23445), (1260, 22403), (1290, 21882), (1505, 18756), (1548, 18235), (1563, 18060), (1806, 15630), (1935, 14588), (2084, 13545), (2580, 10941), (2605, 10836), (2709, 10420), (3010, 9378), (3126, 9030), (3612, 7815), (3647, 7740), (3870, 7294), (4515, 6252), (4689, 6020), (5210, 5418)]