28791320

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{3617}}^1$

素因数の和:3827

約数の個数: 32

約数和(自身を含む): 65124000

約数和(自身を除く): 36332680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3617, 3980, 7234, 7960, 14468, 18085, 28936, 36170, 72340, 144680, 719783, 1439566, 2879132, 3598915, 5758264, 7197830, 14395660, 28791320]

約数ペア:

[(1, 28791320), (2, 14395660), (4, 7197830), (5, 5758264), (8, 3598915), (10, 2879132), (20, 1439566), (40, 719783), (199, 144680), (398, 72340), (796, 36170), (995, 28936), (1592, 18085), (1990, 14468), (3617, 7960), (3980, 7234)]