18087975

素因数分解:

$3^3\times 5^2\times {\mathrm{127}}^1\times {\mathrm{211}}^1$

素因数の和:357

約数の個数: 48

約数和(自身を含む): 33648640

約数和(自身を除く): 15560665

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 127, 135, 211, 225, 381, 633, 635, 675, 1055, 1143, 1899, 1905, 3165, 3175, 3429, 5275, 5697, 5715, 9495, 9525, 15825, 17145, 26797, 28485, 28575, 47475, 80391, 85725, 133985, 142425, 241173, 401955, 669925, 723519, 1205865, 2009775, 3617595, 6029325, 18087975]

約数ペア:

[(1, 18087975), (3, 6029325), (5, 3617595), (9, 2009775), (15, 1205865), (25, 723519), (27, 669925), (45, 401955), (75, 241173), (127, 142425), (135, 133985), (211, 85725), (225, 80391), (381, 47475), (633, 28575), (635, 28485), (675, 26797), (1055, 17145), (1143, 15825), (1899, 9525), (1905, 9495), (3165, 5715), (3175, 5697), (3429, 5275)]