257332208

素因数分解:

$2^4\times 7^1\times {\mathrm{131}}^1\times {\mathrm{17539}}^1$

素因数の和:17685

約数の個数: 40

約数和(自身を含む): 574189440

約数和(自身を除く): 316857232

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 131, 262, 524, 917, 1048, 1834, 2096, 3668, 7336, 14672, 17539, 35078, 70156, 122773, 140312, 245546, 280624, 491092, 982184, 1964368, 2297609, 4595218, 9190436, 16083263, 18380872, 32166526, 36761744, 64333052, 128666104, 257332208]

約数ペア:

[(1, 257332208), (2, 128666104), (4, 64333052), (7, 36761744), (8, 32166526), (14, 18380872), (16, 16083263), (28, 9190436), (56, 4595218), (112, 2297609), (131, 1964368), (262, 982184), (524, 491092), (917, 280624), (1048, 245546), (1834, 140312), (2096, 122773), (3668, 70156), (7336, 35078), (14672, 17539)]