128928256

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{8123}}^1$

素因数の和:8172

約数の個数: 40

約数和(自身を含む): 265947264

約数和(自身を除く): 137019008

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 992, 1984, 3968, 7936, 8123, 15872, 16246, 32492, 64984, 129968, 251813, 259936, 503626, 519872, 1007252, 1039744, 2014504, 2079488, 4029008, 4158976, 8058016, 16116032, 32232064, 64464128, 128928256]

約数ペア:

[(1, 128928256), (2, 64464128), (4, 32232064), (8, 16116032), (16, 8058016), (31, 4158976), (32, 4029008), (62, 2079488), (64, 2014504), (124, 1039744), (128, 1007252), (248, 519872), (256, 503626), (496, 259936), (512, 251813), (992, 129968), (1984, 64984), (3968, 32492), (7936, 16246), (8123, 15872)]