256539136

素因数分解:

$2^9\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2309}}^1$

素因数の和:2365

約数の個数: 80

約数和(自身を含む): 604961280

約数和(自身を除く): 348422144

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 64, 112, 124, 128, 217, 224, 248, 256, 434, 448, 496, 512, 868, 896, 992, 1736, 1792, 1984, 2309, 3472, 3584, 3968, 4618, 6944, 7936, 9236, 13888, 15872, 16163, 18472, 27776, 32326, 36944, 55552, 64652, 71579, 73888, 111104, 129304, 143158, 147776, 258608, 286316, 295552, 501053, 517216, 572632, 591104, 1002106, 1034432, 1145264, 1182208, 2004212, 2068864, 2290528, 4008424, 4137728, 4581056, 8016848, 8275456, 9162112, 16033696, 18324224, 32067392, 36648448, 64134784, 128269568, 256539136]

約数ペア:

[(1, 256539136), (2, 128269568), (4, 64134784), (7, 36648448), (8, 32067392), (14, 18324224), (16, 16033696), (28, 9162112), (31, 8275456), (32, 8016848), (56, 4581056), (62, 4137728), (64, 4008424), (112, 2290528), (124, 2068864), (128, 2004212), (217, 1182208), (224, 1145264), (248, 1034432), (256, 1002106), (434, 591104), (448, 572632), (496, 517216), (512, 501053), (868, 295552), (896, 286316), (992, 258608), (1736, 147776), (1792, 143158), (1984, 129304), (2309, 111104), (3472, 73888), (3584, 71579), (3968, 64652), (4618, 55552), (6944, 36944), (7936, 32326), (9236, 27776), (13888, 18472), (15872, 16163)]