18987075

素因数分解:

$3^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{1223}}^1$

素因数の和:1265

約数の個数: 48

約数和(自身を含む): 36426240

約数和(自身を除く): 17439165

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 115, 135, 207, 225, 345, 575, 621, 675, 1035, 1223, 1725, 3105, 3669, 5175, 6115, 11007, 15525, 18345, 28129, 30575, 33021, 55035, 84387, 91725, 140645, 165105, 253161, 275175, 421935, 703225, 759483, 825525, 1265805, 2109675, 3797415, 6329025, 18987075]

約数ペア:

[(1, 18987075), (3, 6329025), (5, 3797415), (9, 2109675), (15, 1265805), (23, 825525), (25, 759483), (27, 703225), (45, 421935), (69, 275175), (75, 253161), (115, 165105), (135, 140645), (207, 91725), (225, 84387), (345, 55035), (575, 33021), (621, 30575), (675, 28129), (1035, 18345), (1223, 15525), (1725, 11007), (3105, 6115), (3669, 5175)]