78416120

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{22027}}^1$

素因数の和:22127

約数の個数: 32

約数和(自身を含む): 178426800

約数和(自身を除く): 100010680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 22027, 44054, 88108, 110135, 176216, 220270, 440540, 881080, 1960403, 3920806, 7841612, 9802015, 15683224, 19604030, 39208060, 78416120]

約数ペア:

[(1, 78416120), (2, 39208060), (4, 19604030), (5, 15683224), (8, 9802015), (10, 7841612), (20, 3920806), (40, 1960403), (89, 881080), (178, 440540), (356, 220270), (445, 176216), (712, 110135), (890, 88108), (1780, 44054), (3560, 22027)]