21872025

素因数分解:

$3^4\times 5^2\times 7^1\times {\mathrm{1543}}^1$

素因数の和:1572

約数の個数: 60

約数和(自身を含む): 46332352

約数和(自身を除く): 24460327

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 81, 105, 135, 175, 189, 225, 315, 405, 525, 567, 675, 945, 1543, 1575, 2025, 2835, 4629, 4725, 7715, 10801, 13887, 14175, 23145, 32403, 38575, 41661, 54005, 69435, 97209, 115725, 124983, 162015, 208305, 270025, 291627, 347175, 486045, 624915, 810075, 874881, 1041525, 1458135, 2430225, 3124575, 4374405, 7290675, 21872025]

約数ペア:

[(1, 21872025), (3, 7290675), (5, 4374405), (7, 3124575), (9, 2430225), (15, 1458135), (21, 1041525), (25, 874881), (27, 810075), (35, 624915), (45, 486045), (63, 347175), (75, 291627), (81, 270025), (105, 208305), (135, 162015), (175, 124983), (189, 115725), (225, 97209), (315, 69435), (405, 54005), (525, 41661), (567, 38575), (675, 32403), (945, 23145), (1543, 14175), (1575, 13887), (2025, 10801), (2835, 7715), (4629, 4725)]