28790460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{521}}^1$

素因数の和:843

約数の個数: 72

約数和(自身を含む): 87783696

約数和(自身を除く): 58993236

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 307, 521, 614, 921, 1042, 1228, 1535, 1563, 1842, 2084, 2605, 2763, 3070, 3126, 3684, 4605, 4689, 5210, 5526, 6140, 6252, 7815, 9210, 9378, 10420, 11052, 13815, 15630, 18420, 18756, 23445, 27630, 31260, 46890, 55260, 93780, 159947, 319894, 479841, 639788, 799735, 959682, 1439523, 1599470, 1919364, 2399205, 2879046, 3198940, 4798410, 5758092, 7197615, 9596820, 14395230, 28790460]

約数ペア:

[(1, 28790460), (2, 14395230), (3, 9596820), (4, 7197615), (5, 5758092), (6, 4798410), (9, 3198940), (10, 2879046), (12, 2399205), (15, 1919364), (18, 1599470), (20, 1439523), (30, 959682), (36, 799735), (45, 639788), (60, 479841), (90, 319894), (180, 159947), (307, 93780), (521, 55260), (614, 46890), (921, 31260), (1042, 27630), (1228, 23445), (1535, 18756), (1563, 18420), (1842, 15630), (2084, 13815), (2605, 11052), (2763, 10420), (3070, 9378), (3126, 9210), (3684, 7815), (4605, 6252), (4689, 6140), (5210, 5526)]