20609505

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{193}}^1$

素因数の和:327

約数の個数: 64

約数和(自身を含む): 42462720

約数和(自身を除く): 21853215

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 113, 135, 189, 193, 315, 339, 565, 579, 791, 945, 965, 1017, 1351, 1695, 1737, 2373, 2895, 3051, 3955, 4053, 5085, 5211, 6755, 7119, 8685, 11865, 12159, 15255, 20265, 21357, 21809, 26055, 35595, 36477, 60795, 65427, 106785, 109045, 152663, 182385, 196281, 327135, 457989, 588843, 763315, 981405, 1373967, 2289945, 2944215, 4121901, 6869835, 20609505]

約数ペア:

[(1, 20609505), (3, 6869835), (5, 4121901), (7, 2944215), (9, 2289945), (15, 1373967), (21, 981405), (27, 763315), (35, 588843), (45, 457989), (63, 327135), (105, 196281), (113, 182385), (135, 152663), (189, 109045), (193, 106785), (315, 65427), (339, 60795), (565, 36477), (579, 35595), (791, 26055), (945, 21809), (965, 21357), (1017, 20265), (1351, 15255), (1695, 12159), (1737, 11865), (2373, 8685), (2895, 7119), (3051, 6755), (3955, 5211), (4053, 5085)]