20870055

素因数分解:

$3^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{193}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 38132640

約数和(自身を除く): 17262585

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 89, 135, 193, 243, 267, 405, 445, 579, 801, 965, 1215, 1335, 1737, 2403, 2895, 4005, 5211, 7209, 8685, 12015, 15633, 17177, 21627, 26055, 36045, 46899, 51531, 78165, 85885, 108135, 154593, 234495, 257655, 463779, 772965, 1391337, 2318895, 4174011, 6956685, 20870055]

約数ペア:

[(1, 20870055), (3, 6956685), (5, 4174011), (9, 2318895), (15, 1391337), (27, 772965), (45, 463779), (81, 257655), (89, 234495), (135, 154593), (193, 108135), (243, 85885), (267, 78165), (405, 51531), (445, 46899), (579, 36045), (801, 26055), (965, 21627), (1215, 17177), (1335, 15633), (1737, 12015), (2403, 8685), (2895, 7209), (4005, 5211)]