12639040

素因数分解:

$2^6\times 5^1\times {\mathrm{127}}^1\times {\mathrm{311}}^1$

素因数の和:455

約数の個数: 56

約数和(自身を含む): 30431232

約数和(自身を除く): 17792192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 160, 254, 311, 320, 508, 622, 635, 1016, 1244, 1270, 1555, 2032, 2488, 2540, 3110, 4064, 4976, 5080, 6220, 8128, 9952, 10160, 12440, 19904, 20320, 24880, 39497, 40640, 49760, 78994, 99520, 157988, 197485, 315976, 394970, 631952, 789940, 1263904, 1579880, 2527808, 3159760, 6319520, 12639040]

約数ペア:

[(1, 12639040), (2, 6319520), (4, 3159760), (5, 2527808), (8, 1579880), (10, 1263904), (16, 789940), (20, 631952), (32, 394970), (40, 315976), (64, 197485), (80, 157988), (127, 99520), (160, 78994), (254, 49760), (311, 40640), (320, 39497), (508, 24880), (622, 20320), (635, 19904), (1016, 12440), (1244, 10160), (1270, 9952), (1555, 8128), (2032, 6220), (2488, 5080), (2540, 4976), (3110, 4064)]