18618440

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{2339}}^1$

素因数の和:2549

約数の個数: 32

約数和(自身を含む): 42120000

約数和(自身を除く): 23501560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 2339, 3980, 4678, 7960, 9356, 11695, 18712, 23390, 46780, 93560, 465461, 930922, 1861844, 2327305, 3723688, 4654610, 9309220, 18618440]

約数ペア:

[(1, 18618440), (2, 9309220), (4, 4654610), (5, 3723688), (8, 2327305), (10, 1861844), (20, 930922), (40, 465461), (199, 93560), (398, 46780), (796, 23390), (995, 18712), (1592, 11695), (1990, 9356), (2339, 7960), (3980, 4678)]