1255691720

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{122149}}^1$

素因数の和:122417

約数の個数: 32

約数和(自身を含む): 2836323000

約数和(自身を除く): 1580631280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 122149, 244298, 488596, 610745, 977192, 1221490, 2442980, 4885960, 31392293, 62784586, 125569172, 156961465, 251138344, 313922930, 627845860, 1255691720]

約数ペア:

[(1, 1255691720), (2, 627845860), (4, 313922930), (5, 251138344), (8, 156961465), (10, 125569172), (20, 62784586), (40, 31392293), (257, 4885960), (514, 2442980), (1028, 1221490), (1285, 977192), (2056, 610745), (2570, 488596), (5140, 244298), (10280, 122149)]