40002980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{199}}^1$

素因数の和:273

約数の個数: 72

約数和(自身を含む): 92904000

約数和(自身を除く): 52901020

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 199, 230, 380, 398, 437, 460, 529, 796, 874, 995, 1058, 1748, 1990, 2116, 2185, 2645, 3781, 3980, 4370, 4577, 5290, 7562, 8740, 9154, 10051, 10580, 15124, 18308, 18905, 20102, 22885, 37810, 40204, 45770, 50255, 75620, 86963, 91540, 100510, 105271, 173926, 201020, 210542, 347852, 421084, 434815, 526355, 869630, 1052710, 1739260, 2000149, 2105420, 4000298, 8000596, 10000745, 20001490, 40002980]

約数ペア:

[(1, 40002980), (2, 20001490), (4, 10000745), (5, 8000596), (10, 4000298), (19, 2105420), (20, 2000149), (23, 1739260), (38, 1052710), (46, 869630), (76, 526355), (92, 434815), (95, 421084), (115, 347852), (190, 210542), (199, 201020), (230, 173926), (380, 105271), (398, 100510), (437, 91540), (460, 86963), (529, 75620), (796, 50255), (874, 45770), (995, 40204), (1058, 37810), (1748, 22885), (1990, 20102), (2116, 18905), (2185, 18308), (2645, 15124), (3781, 10580), (3980, 10051), (4370, 9154), (4577, 8740), (5290, 7562)]