155120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{277}}^1$

素因数の和:297

約数の個数: 40

約数和(自身を含む): 413664

約数和(自身を除く): 258544

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 277, 280, 554, 560, 1108, 1385, 1939, 2216, 2770, 3878, 4432, 5540, 7756, 9695, 11080, 15512, 19390, 22160, 31024, 38780, 77560, 155120]

約数ペア:

[(1, 155120), (2, 77560), (4, 38780), (5, 31024), (7, 22160), (8, 19390), (10, 15512), (14, 11080), (16, 9695), (20, 7756), (28, 5540), (35, 4432), (40, 3878), (56, 2770), (70, 2216), (80, 1939), (112, 1385), (140, 1108), (277, 560), (280, 554)]