31781860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{571}}^1$

素因数の和:625

約数の個数: 72

約数和(自身を含む): 76684608

約数和(自身を除く): 44902748

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 110, 115, 121, 220, 230, 242, 253, 460, 484, 506, 571, 605, 1012, 1142, 1210, 1265, 2284, 2420, 2530, 2783, 2855, 5060, 5566, 5710, 6281, 11132, 11420, 12562, 13133, 13915, 25124, 26266, 27830, 31405, 52532, 55660, 62810, 65665, 69091, 125620, 131330, 138182, 144463, 262660, 276364, 288926, 345455, 577852, 690910, 722315, 1381820, 1444630, 1589093, 2889260, 3178186, 6356372, 7945465, 15890930, 31781860]

約数ペア:

[(1, 31781860), (2, 15890930), (4, 7945465), (5, 6356372), (10, 3178186), (11, 2889260), (20, 1589093), (22, 1444630), (23, 1381820), (44, 722315), (46, 690910), (55, 577852), (92, 345455), (110, 288926), (115, 276364), (121, 262660), (220, 144463), (230, 138182), (242, 131330), (253, 125620), (460, 69091), (484, 65665), (506, 62810), (571, 55660), (605, 52532), (1012, 31405), (1142, 27830), (1210, 26266), (1265, 25124), (2284, 13915), (2420, 13133), (2530, 12562), (2783, 11420), (2855, 11132), (5060, 6281), (5566, 5710)]