19884735

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1789}}^1$

素因数の和:1832

約数の個数: 48

約数和(自身を含む): 39093600

約数和(自身を除く): 19208865

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 171, 195, 247, 285, 585, 741, 855, 1235, 1789, 2223, 3705, 5367, 8945, 11115, 16101, 23257, 26835, 33991, 69771, 80505, 101973, 116285, 169955, 209313, 305919, 348855, 441883, 509865, 1046565, 1325649, 1529595, 2209415, 3976947, 6628245, 19884735]

約数ペア:

[(1, 19884735), (3, 6628245), (5, 3976947), (9, 2209415), (13, 1529595), (15, 1325649), (19, 1046565), (39, 509865), (45, 441883), (57, 348855), (65, 305919), (95, 209313), (117, 169955), (171, 116285), (195, 101973), (247, 80505), (285, 69771), (585, 33991), (741, 26835), (855, 23257), (1235, 16101), (1789, 11115), (2223, 8945), (3705, 5367)]