81235280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{145063}}^1$

素因数の和:145083

約数の個数: 40

約数和(自身を含む): 215855232

約数和(自身を除く): 134619952

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 145063, 290126, 580252, 725315, 1015441, 1160504, 1450630, 2030882, 2321008, 2901260, 4061764, 5077205, 5802520, 8123528, 10154410, 11605040, 16247056, 20308820, 40617640, 81235280]

約数ペア:

[(1, 81235280), (2, 40617640), (4, 20308820), (5, 16247056), (7, 11605040), (8, 10154410), (10, 8123528), (14, 5802520), (16, 5077205), (20, 4061764), (28, 2901260), (35, 2321008), (40, 2030882), (56, 1450630), (70, 1160504), (80, 1015441), (112, 725315), (140, 580252), (280, 290126), (560, 145063)]