20671917

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{337}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 33226752

約数和(自身を除く): 12554835

約数列:

[1, 3, 7, 21, 23, 69, 127, 161, 337, 381, 483, 889, 1011, 2359, 2667, 2921, 7077, 7751, 8763, 20447, 23253, 42799, 54257, 61341, 128397, 162771, 299593, 898779, 984377, 2953131, 6890639, 20671917]

約数ペア:

[(1, 20671917), (3, 6890639), (7, 2953131), (21, 984377), (23, 898779), (69, 299593), (127, 162771), (161, 128397), (337, 61341), (381, 54257), (483, 42799), (889, 23253), (1011, 20447), (2359, 8763), (2667, 7751), (2921, 7077)]