256413654

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{678343}}^1$

素因数の和:678361

約数の個数: 32

約数和(自身を含む): 651210240

約数和(自身を除く): 394796586

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 378, 678343, 1356686, 2035029, 4070058, 4748401, 6105087, 9496802, 12210174, 14245203, 18315261, 28490406, 36630522, 42735609, 85471218, 128206827, 256413654]

約数ペア:

[(1, 256413654), (2, 128206827), (3, 85471218), (6, 42735609), (7, 36630522), (9, 28490406), (14, 18315261), (18, 14245203), (21, 12210174), (27, 9496802), (42, 6105087), (54, 4748401), (63, 4070058), (126, 2035029), (189, 1356686), (378, 678343)]