78798080

素因数分解:

$2^8\times 5^1\times {\mathrm{61561}}^1$

素因数の和:61582

約数の個数: 36

約数和(自身を含む): 188749092

約数和(自身を除く): 109951012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 61561, 123122, 246244, 307805, 492488, 615610, 984976, 1231220, 1969952, 2462440, 3939904, 4924880, 7879808, 9849760, 15759616, 19699520, 39399040, 78798080]

約数ペア:

[(1, 78798080), (2, 39399040), (4, 19699520), (5, 15759616), (8, 9849760), (10, 7879808), (16, 4924880), (20, 3939904), (32, 2462440), (40, 1969952), (64, 1231220), (80, 984976), (128, 615610), (160, 492488), (256, 307805), (320, 246244), (640, 123122), (1280, 61561)]