7924180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{199}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 18345600

約数和(自身を除く): 10421420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 181, 199, 220, 362, 398, 724, 796, 905, 995, 1810, 1990, 1991, 2189, 3620, 3980, 3982, 4378, 7964, 8756, 9955, 10945, 19910, 21890, 36019, 39820, 43780, 72038, 144076, 180095, 360190, 396209, 720380, 792418, 1584836, 1981045, 3962090, 7924180]

約数ペア:

[(1, 7924180), (2, 3962090), (4, 1981045), (5, 1584836), (10, 792418), (11, 720380), (20, 396209), (22, 360190), (44, 180095), (55, 144076), (110, 72038), (181, 43780), (199, 39820), (220, 36019), (362, 21890), (398, 19910), (724, 10945), (796, 9955), (905, 8756), (995, 7964), (1810, 4378), (1990, 3982), (1991, 3980), (2189, 3620)]