638569309

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{1049}}^1$

素因数の和:1297

約数の個数: 32

約数和(自身を含む): 806400000

約数和(自身を除く): 167830691

約数列:

[1, 7, 19, 23, 133, 161, 199, 437, 1049, 1393, 3059, 3781, 4577, 7343, 19931, 24127, 26467, 32039, 86963, 139517, 168889, 208751, 458413, 608741, 1461257, 3208891, 3966269, 4801273, 27763883, 33608911, 91224187, 638569309]

約数ペア:

[(1, 638569309), (7, 91224187), (19, 33608911), (23, 27763883), (133, 4801273), (161, 3966269), (199, 3208891), (437, 1461257), (1049, 608741), (1393, 458413), (3059, 208751), (3781, 168889), (4577, 139517), (7343, 86963), (19931, 32039), (24127, 26467)]