131253520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{86351}}^1$

素因数の和:86383

約数の個数: 40

約数和(自身を含む): 321229440

約数和(自身を除く): 189975920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 86351, 172702, 345404, 431755, 690808, 863510, 1381616, 1640669, 1727020, 3281338, 3454040, 6562676, 6908080, 8203345, 13125352, 16406690, 26250704, 32813380, 65626760, 131253520]

約数ペア:

[(1, 131253520), (2, 65626760), (4, 32813380), (5, 26250704), (8, 16406690), (10, 13125352), (16, 8203345), (19, 6908080), (20, 6562676), (38, 3454040), (40, 3281338), (76, 1727020), (80, 1640669), (95, 1381616), (152, 863510), (190, 690808), (304, 431755), (380, 345404), (760, 172702), (1520, 86351)]