1285875

素因数分解:

$3^4\times 5^3\times {\mathrm{127}}^1$

素因数の和:154

約数の個数: 40

約数和(自身を含む): 2416128

約数和(自身を除く): 1130253

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 127, 135, 225, 375, 381, 405, 635, 675, 1125, 1143, 1905, 2025, 3175, 3375, 3429, 5715, 9525, 10125, 10287, 15875, 17145, 28575, 47625, 51435, 85725, 142875, 257175, 428625, 1285875]

約数ペア:

[(1, 1285875), (3, 428625), (5, 257175), (9, 142875), (15, 85725), (25, 51435), (27, 47625), (45, 28575), (75, 17145), (81, 15875), (125, 10287), (127, 10125), (135, 9525), (225, 5715), (375, 3429), (381, 3375), (405, 3175), (635, 2025), (675, 1905), (1125, 1143)]