20710725

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{383}}^1$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 39616512

約数和(自身を除く): 18905787

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 103, 105, 175, 309, 383, 515, 525, 721, 1149, 1545, 1915, 2163, 2575, 2681, 3605, 5745, 7725, 8043, 9575, 10815, 13405, 18025, 28725, 39449, 40215, 54075, 67025, 118347, 197245, 201075, 276143, 591735, 828429, 986225, 1380715, 2958675, 4142145, 6903575, 20710725]

約数ペア:

[(1, 20710725), (3, 6903575), (5, 4142145), (7, 2958675), (15, 1380715), (21, 986225), (25, 828429), (35, 591735), (75, 276143), (103, 201075), (105, 197245), (175, 118347), (309, 67025), (383, 54075), (515, 40215), (525, 39449), (721, 28725), (1149, 18025), (1545, 13405), (1915, 10815), (2163, 9575), (2575, 8043), (2681, 7725), (3605, 5745)]