78439040

素因数分解:

$2^7\times 5^1\times {\mathrm{122561}}^1$

素因数の和:122580

約数の個数: 32

約数和(自身を含む): 187519860

約数和(自身を除く): 109080820

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 122561, 245122, 490244, 612805, 980488, 1225610, 1960976, 2451220, 3921952, 4902440, 7843904, 9804880, 15687808, 19609760, 39219520, 78439040]

約数ペア:

[(1, 78439040), (2, 39219520), (4, 19609760), (5, 15687808), (8, 9804880), (10, 7843904), (16, 4902440), (20, 3921952), (32, 2451220), (40, 1960976), (64, 1225610), (80, 980488), (128, 612805), (160, 490244), (320, 245122), (640, 122561)]