19805268

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1721}}^1$

素因数の和:1872

約数の個数: 48

約数和(自身を含む): 53230464

約数和(自身を除く): 33425196

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 137, 274, 411, 548, 822, 959, 1644, 1721, 1918, 2877, 3442, 3836, 5163, 5754, 6884, 10326, 11508, 12047, 20652, 24094, 36141, 48188, 72282, 144564, 235777, 471554, 707331, 943108, 1414662, 1650439, 2829324, 3300878, 4951317, 6601756, 9902634, 19805268]

約数ペア:

[(1, 19805268), (2, 9902634), (3, 6601756), (4, 4951317), (6, 3300878), (7, 2829324), (12, 1650439), (14, 1414662), (21, 943108), (28, 707331), (42, 471554), (84, 235777), (137, 144564), (274, 72282), (411, 48188), (548, 36141), (822, 24094), (959, 20652), (1644, 12047), (1721, 11508), (1918, 10326), (2877, 6884), (3442, 5754), (3836, 5163)]