19242820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{641}}^1$

素因数の和:748

約数の個数: 48

約数和(自身を含む): 43142400

約数和(自身を除く): 23899580

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 79, 95, 158, 190, 316, 380, 395, 641, 790, 1282, 1501, 1580, 2564, 3002, 3205, 6004, 6410, 7505, 12179, 12820, 15010, 24358, 30020, 48716, 50639, 60895, 101278, 121790, 202556, 243580, 253195, 506390, 962141, 1012780, 1924282, 3848564, 4810705, 9621410, 19242820]

約数ペア:

[(1, 19242820), (2, 9621410), (4, 4810705), (5, 3848564), (10, 1924282), (19, 1012780), (20, 962141), (38, 506390), (76, 253195), (79, 243580), (95, 202556), (158, 121790), (190, 101278), (316, 60895), (380, 50639), (395, 48716), (641, 30020), (790, 24358), (1282, 15010), (1501, 12820), (1580, 12179), (2564, 7505), (3002, 6410), (3205, 6004)]