81341660

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{2579}}^1$

素因数の和:2690

約数の個数: 48

約数和(自身を含む): 182044800

約数和(自身を除く): 100703140

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 83, 95, 166, 190, 332, 380, 415, 830, 1577, 1660, 2579, 3154, 5158, 6308, 7885, 10316, 12895, 15770, 25790, 31540, 49001, 51580, 98002, 196004, 214057, 245005, 428114, 490010, 856228, 980020, 1070285, 2140570, 4067083, 4281140, 8134166, 16268332, 20335415, 40670830, 81341660]

約数ペア:

[(1, 81341660), (2, 40670830), (4, 20335415), (5, 16268332), (10, 8134166), (19, 4281140), (20, 4067083), (38, 2140570), (76, 1070285), (83, 980020), (95, 856228), (166, 490010), (190, 428114), (332, 245005), (380, 214057), (415, 196004), (830, 98002), (1577, 51580), (1660, 49001), (2579, 31540), (3154, 25790), (5158, 15770), (6308, 12895), (7885, 10316)]