20042505

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{167}}^1$

素因数の和:315

約数の個数: 64

約数和(自身を含む): 41287680

約数和(自身を除く): 21245175

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 127, 135, 167, 189, 315, 381, 501, 635, 835, 889, 945, 1143, 1169, 1503, 1905, 2505, 2667, 3429, 3507, 4445, 4509, 5715, 5845, 7515, 8001, 10521, 13335, 17145, 17535, 21209, 22545, 24003, 31563, 40005, 52605, 63627, 106045, 120015, 148463, 157815, 190881, 318135, 445389, 572643, 742315, 954405, 1336167, 2226945, 2863215, 4008501, 6680835, 20042505]

約数ペア:

[(1, 20042505), (3, 6680835), (5, 4008501), (7, 2863215), (9, 2226945), (15, 1336167), (21, 954405), (27, 742315), (35, 572643), (45, 445389), (63, 318135), (105, 190881), (127, 157815), (135, 148463), (167, 120015), (189, 106045), (315, 63627), (381, 52605), (501, 40005), (635, 31563), (835, 24003), (889, 22545), (945, 21209), (1143, 17535), (1169, 17145), (1503, 13335), (1905, 10521), (2505, 8001), (2667, 7515), (3429, 5845), (3507, 5715), (4445, 4509)]