72109972

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{4007}}^1$

素因数の和:4431

約数の個数: 24

約数和(自身を含む): 138035520

約数和(自身を除く): 65925548

約数列:

[1, 2, 4, 11, 22, 44, 409, 818, 1636, 4007, 4499, 8014, 8998, 16028, 17996, 44077, 88154, 176308, 1638863, 3277726, 6555452, 18027493, 36054986, 72109972]

約数ペア:

[(1, 72109972), (2, 36054986), (4, 18027493), (11, 6555452), (22, 3277726), (44, 1638863), (409, 176308), (818, 88154), (1636, 44077), (4007, 17996), (4499, 16028), (8014, 8998)]