81781752

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{262121}}^1$

素因数の和:262143

約数の個数: 32

約数和(自身を含む): 220182480

約数和(自身を除く): 138400728

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 262121, 524242, 786363, 1048484, 1572726, 2096968, 3145452, 3407573, 6290904, 6815146, 10222719, 13630292, 20445438, 27260584, 40890876, 81781752]

約数ペア:

[(1, 81781752), (2, 40890876), (3, 27260584), (4, 20445438), (6, 13630292), (8, 10222719), (12, 6815146), (13, 6290904), (24, 3407573), (26, 3145452), (39, 2096968), (52, 1572726), (78, 1048484), (104, 786363), (156, 524242), (312, 262121)]