20115585

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3361}}^1$

素因数の和:3398

約数の個数: 48

約数和(自身を含む): 41957760

約数和(自身を除く): 21842175

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3361, 5985, 10083, 16805, 23527, 30249, 50415, 63859, 70581, 117635, 151245, 191577, 211743, 319295, 352905, 447013, 574731, 957885, 1058715, 1341039, 2235065, 2873655, 4023117, 6705195, 20115585]

約数ペア:

[(1, 20115585), (3, 6705195), (5, 4023117), (7, 2873655), (9, 2235065), (15, 1341039), (19, 1058715), (21, 957885), (35, 574731), (45, 447013), (57, 352905), (63, 319295), (95, 211743), (105, 191577), (133, 151245), (171, 117635), (285, 70581), (315, 63859), (399, 50415), (665, 30249), (855, 23527), (1197, 16805), (1995, 10083), (3361, 5985)]