21321048

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{709}}^1$

素因数の和:904

約数の個数: 64

約数和(自身を含む): 61344000

約数和(自身を除く): 40022952

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 179, 358, 537, 709, 716, 1074, 1253, 1418, 1432, 2127, 2148, 2506, 2836, 3759, 4254, 4296, 4963, 5012, 5672, 7518, 8508, 9926, 10024, 14889, 15036, 17016, 19852, 29778, 30072, 39704, 59556, 119112, 126911, 253822, 380733, 507644, 761466, 888377, 1015288, 1522932, 1776754, 2665131, 3045864, 3553508, 5330262, 7107016, 10660524, 21321048]

約数ペア:

[(1, 21321048), (2, 10660524), (3, 7107016), (4, 5330262), (6, 3553508), (7, 3045864), (8, 2665131), (12, 1776754), (14, 1522932), (21, 1015288), (24, 888377), (28, 761466), (42, 507644), (56, 380733), (84, 253822), (168, 126911), (179, 119112), (358, 59556), (537, 39704), (709, 30072), (716, 29778), (1074, 19852), (1253, 17016), (1418, 15036), (1432, 14889), (2127, 10024), (2148, 9926), (2506, 8508), (2836, 7518), (3759, 5672), (4254, 5012), (4296, 4963)]