12688240

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{797}}^1$

素因数の和:1009

約数の個数: 40

約数和(自身を含む): 29685600

約数和(自身を除く): 16997360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 797, 995, 1592, 1594, 1990, 3184, 3188, 3980, 3985, 6376, 7960, 7970, 12752, 15920, 15940, 31880, 63760, 158603, 317206, 634412, 793015, 1268824, 1586030, 2537648, 3172060, 6344120, 12688240]

約数ペア:

[(1, 12688240), (2, 6344120), (4, 3172060), (5, 2537648), (8, 1586030), (10, 1268824), (16, 793015), (20, 634412), (40, 317206), (80, 158603), (199, 63760), (398, 31880), (796, 15940), (797, 15920), (995, 12752), (1592, 7970), (1594, 7960), (1990, 6376), (3184, 3985), (3188, 3980)]