28047880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{919}}^1$

素因数の和:1046

約数の個数: 64

約数和(自身を含む): 72864000

約数和(自身を除く): 44816120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 109, 140, 218, 280, 436, 545, 763, 872, 919, 1090, 1526, 1838, 2180, 3052, 3676, 3815, 4360, 4595, 6104, 6433, 7352, 7630, 9190, 12866, 15260, 18380, 25732, 30520, 32165, 36760, 51464, 64330, 100171, 128660, 200342, 257320, 400684, 500855, 701197, 801368, 1001710, 1402394, 2003420, 2804788, 3505985, 4006840, 5609576, 7011970, 14023940, 28047880]

約数ペア:

[(1, 28047880), (2, 14023940), (4, 7011970), (5, 5609576), (7, 4006840), (8, 3505985), (10, 2804788), (14, 2003420), (20, 1402394), (28, 1001710), (35, 801368), (40, 701197), (56, 500855), (70, 400684), (109, 257320), (140, 200342), (218, 128660), (280, 100171), (436, 64330), (545, 51464), (763, 36760), (872, 32165), (919, 30520), (1090, 25732), (1526, 18380), (1838, 15260), (2180, 12866), (3052, 9190), (3676, 7630), (3815, 7352), (4360, 6433), (4595, 6104)]