215355329

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{541}}^1$

素因数の和:681

約数の個数: 32

約数和(自身を含む): 269525760

約数和(自身を除く): 54170431

約数列:

[1, 7, 19, 41, 73, 133, 287, 511, 541, 779, 1387, 2993, 3787, 5453, 9709, 10279, 20951, 22181, 39493, 56867, 71953, 155267, 276451, 398069, 421439, 750367, 1619213, 2950073, 5252569, 11334491, 30765047, 215355329]

約数ペア:

[(1, 215355329), (7, 30765047), (19, 11334491), (41, 5252569), (73, 2950073), (133, 1619213), (287, 750367), (511, 421439), (541, 398069), (779, 276451), (1387, 155267), (2993, 71953), (3787, 56867), (5453, 39493), (9709, 22181), (10279, 20951)]