261449216

素因数分解:

$2^9\times 7^1\times {\mathrm{72949}}^1$

素因数の和:72974

約数の個数: 40

約数和(自身を含む): 597022800

約数和(自身を除く): 335573584

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 512, 896, 1792, 3584, 72949, 145898, 291796, 510643, 583592, 1021286, 1167184, 2042572, 2334368, 4085144, 4668736, 8170288, 9337472, 16340576, 18674944, 32681152, 37349888, 65362304, 130724608, 261449216]

約数ペア:

[(1, 261449216), (2, 130724608), (4, 65362304), (7, 37349888), (8, 32681152), (14, 18674944), (16, 16340576), (28, 9337472), (32, 8170288), (56, 4668736), (64, 4085144), (112, 2334368), (128, 2042572), (224, 1167184), (256, 1021286), (448, 583592), (512, 510643), (896, 291796), (1792, 145898), (3584, 72949)]