28105120

素因数分解:

$2^5\times 5^1\times {\mathrm{269}}^1\times {\mathrm{653}}^1$

素因数の和:937

約数の個数: 48

約数和(自身を含む): 66747240

約数和(自身を除く): 38642120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 269, 538, 653, 1076, 1306, 1345, 2152, 2612, 2690, 3265, 4304, 5224, 5380, 6530, 8608, 10448, 10760, 13060, 20896, 21520, 26120, 43040, 52240, 104480, 175657, 351314, 702628, 878285, 1405256, 1756570, 2810512, 3513140, 5621024, 7026280, 14052560, 28105120]

約数ペア:

[(1, 28105120), (2, 14052560), (4, 7026280), (5, 5621024), (8, 3513140), (10, 2810512), (16, 1756570), (20, 1405256), (32, 878285), (40, 702628), (80, 351314), (160, 175657), (269, 104480), (538, 52240), (653, 43040), (1076, 26120), (1306, 21520), (1345, 20896), (2152, 13060), (2612, 10760), (2690, 10448), (3265, 8608), (4304, 6530), (5224, 5380)]