81615508

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{157}}^1\times {\mathrm{769}}^1$

素因数の和:956

約数の個数: 36

約数和(自身を含む): 155846460

約数和(自身を除く): 74230952

約数列:

[1, 2, 4, 13, 26, 52, 157, 169, 314, 338, 628, 676, 769, 1538, 2041, 3076, 4082, 8164, 9997, 19994, 26533, 39988, 53066, 106132, 120733, 129961, 241466, 259922, 482932, 519844, 1569529, 3139058, 6278116, 20403877, 40807754, 81615508]

約数ペア:

[(1, 81615508), (2, 40807754), (4, 20403877), (13, 6278116), (26, 3139058), (52, 1569529), (157, 519844), (169, 482932), (314, 259922), (338, 241466), (628, 129961), (676, 120733), (769, 106132), (1538, 53066), (2041, 39988), (3076, 26533), (4082, 19994), (8164, 9997)]