81815991

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{439}}^1$

素因数の和:575

約数の個数: 32

約数和(自身を含む): 118778880

約数和(自身を除く): 36962889

約数列:

[1, 3, 23, 37, 69, 73, 111, 219, 439, 851, 1317, 1679, 2553, 2701, 5037, 8103, 10097, 16243, 30291, 32047, 48729, 62123, 96141, 186369, 373589, 737081, 1120767, 1185739, 2211243, 3557217, 27271997, 81815991]

約数ペア:

[(1, 81815991), (3, 27271997), (23, 3557217), (37, 2211243), (69, 1185739), (73, 1120767), (111, 737081), (219, 373589), (439, 186369), (851, 96141), (1317, 62123), (1679, 48729), (2553, 32047), (2701, 30291), (5037, 16243), (8103, 10097)]