21970305

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{347}}^1$

素因数の和:435

約数の個数: 64

約数和(自身を含む): 45434880

約数和(自身を除く): 23464575

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 67, 105, 135, 189, 201, 315, 335, 347, 469, 603, 945, 1005, 1041, 1407, 1735, 1809, 2345, 2429, 3015, 3123, 4221, 5205, 7035, 7287, 9045, 9369, 12145, 12663, 15615, 21105, 21861, 23249, 36435, 46845, 63315, 65583, 69747, 109305, 116245, 162743, 209241, 327915, 348735, 488229, 627723, 813715, 1046205, 1464687, 2441145, 3138615, 4394061, 7323435, 21970305]

約数ペア:

[(1, 21970305), (3, 7323435), (5, 4394061), (7, 3138615), (9, 2441145), (15, 1464687), (21, 1046205), (27, 813715), (35, 627723), (45, 488229), (63, 348735), (67, 327915), (105, 209241), (135, 162743), (189, 116245), (201, 109305), (315, 69747), (335, 65583), (347, 63315), (469, 46845), (603, 36435), (945, 23249), (1005, 21861), (1041, 21105), (1407, 15615), (1735, 12663), (1809, 12145), (2345, 9369), (2429, 9045), (3015, 7287), (3123, 7035), (4221, 5205)]