278340860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{4861}}^1$

素因数の和:5286

約数の個数: 48

約数和(自身を含む): 669789120

約数和(自身を除く): 391448260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 409, 818, 1636, 2045, 2863, 4090, 4861, 5726, 8180, 9722, 11452, 14315, 19444, 24305, 28630, 34027, 48610, 57260, 68054, 97220, 136108, 170135, 340270, 680540, 1988149, 3976298, 7952596, 9940745, 13917043, 19881490, 27834086, 39762980, 55668172, 69585215, 139170430, 278340860]

約数ペア:

[(1, 278340860), (2, 139170430), (4, 69585215), (5, 55668172), (7, 39762980), (10, 27834086), (14, 19881490), (20, 13917043), (28, 9940745), (35, 7952596), (70, 3976298), (140, 1988149), (409, 680540), (818, 340270), (1636, 170135), (2045, 136108), (2863, 97220), (4090, 68054), (4861, 57260), (5726, 48610), (8180, 34027), (9722, 28630), (11452, 24305), (14315, 19444)]