81474040

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{33391}}^1$

素因数の和:33463

約数の個数: 32

約数和(自身を含む): 186327360

約数和(自身を除く): 104853320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 33391, 66782, 133564, 166955, 267128, 333910, 667820, 1335640, 2036851, 4073702, 8147404, 10184255, 16294808, 20368510, 40737020, 81474040]

約数ペア:

[(1, 81474040), (2, 40737020), (4, 20368510), (5, 16294808), (8, 10184255), (10, 8147404), (20, 4073702), (40, 2036851), (61, 1335640), (122, 667820), (244, 333910), (305, 267128), (488, 166955), (610, 133564), (1220, 66782), (2440, 33391)]