245711480

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{17909}}^1$

素因数の和:17941

約数の個数: 64

約数和(自身を含む): 644760000

約数和(自身を除く): 399048520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 343, 392, 490, 686, 980, 1372, 1715, 1960, 2744, 3430, 6860, 13720, 17909, 35818, 71636, 89545, 125363, 143272, 179090, 250726, 358180, 501452, 626815, 716360, 877541, 1002904, 1253630, 1755082, 2507260, 3510164, 4387705, 5014520, 6142787, 7020328, 8775410, 12285574, 17550820, 24571148, 30713935, 35101640, 49142296, 61427870, 122855740, 245711480]

約数ペア:

[(1, 245711480), (2, 122855740), (4, 61427870), (5, 49142296), (7, 35101640), (8, 30713935), (10, 24571148), (14, 17550820), (20, 12285574), (28, 8775410), (35, 7020328), (40, 6142787), (49, 5014520), (56, 4387705), (70, 3510164), (98, 2507260), (140, 1755082), (196, 1253630), (245, 1002904), (280, 877541), (343, 716360), (392, 626815), (490, 501452), (686, 358180), (980, 250726), (1372, 179090), (1715, 143272), (1960, 125363), (2744, 89545), (3430, 71636), (6860, 35818), (13720, 17909)]