208740375

素因数分解:

$3^3\times 5^3\times {\mathrm{127}}^1\times {\mathrm{487}}^1$

素因数の和:638

約数の個数: 64

約数和(自身を含む): 389775360

約数和(自身を除く): 181034985

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 125, 127, 135, 225, 375, 381, 487, 635, 675, 1125, 1143, 1461, 1905, 2435, 3175, 3375, 3429, 4383, 5715, 7305, 9525, 12175, 13149, 15875, 17145, 21915, 28575, 36525, 47625, 60875, 61849, 65745, 85725, 109575, 142875, 182625, 185547, 309245, 328725, 428625, 547875, 556641, 927735, 1546225, 1643625, 1669923, 2783205, 4638675, 7731125, 8349615, 13916025, 23193375, 41748075, 69580125, 208740375]

約数ペア:

[(1, 208740375), (3, 69580125), (5, 41748075), (9, 23193375), (15, 13916025), (25, 8349615), (27, 7731125), (45, 4638675), (75, 2783205), (125, 1669923), (127, 1643625), (135, 1546225), (225, 927735), (375, 556641), (381, 547875), (487, 428625), (635, 328725), (675, 309245), (1125, 185547), (1143, 182625), (1461, 142875), (1905, 109575), (2435, 85725), (3175, 65745), (3375, 61849), (3429, 60875), (4383, 47625), (5715, 36525), (7305, 28575), (9525, 21915), (12175, 17145), (13149, 15875)]